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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing
**
** This file is part of Qbs.
**
** 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 The Qt Company. For licensing terms and
** conditions see http://www.qt.io/terms-conditions. For further information
** use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#ifndef QBS_VALUE_H
#define QBS_VALUE_H
#include "forward_decls.h"
#include <tools/codelocation.h>
#include <QVariant>
namespace qbs {
namespace Internal {
class Item;
class ValueHandler;
class Value
{
public:
enum Type
{
JSSourceValueType,
ItemValueType,
VariantValueType,
BuiltinValueType
};
Value(Type t, bool createdByPropertiesBlock);
virtual ~Value();
Type type() const { return m_type; }
virtual void apply(ValueHandler *) = 0;
virtual ValuePtr clone() const = 0;
virtual CodeLocation location() const { return CodeLocation(); }
Item *definingItem() const;
virtual void setDefiningItem(Item *item);
ValuePtr next() const;
void setNext(const ValuePtr &next);
bool createdByPropertiesBlock() const { return m_createdByPropertiesBlock; }
private:
Type m_type;
Item *m_definingItem;
ValuePtr m_next;
const bool m_createdByPropertiesBlock;
};
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(bool createdByPropertiesBlock);
enum Flag
{
NoFlags = 0x00,
SourceUsesBase = 0x01,
SourceUsesOuter = 0x02,
SourceUsesOriginal = 0x04,
HasFunctionForm = 0x08
};
Q_DECLARE_FLAGS(Flags, Flag)
public:
static JSSourceValuePtr create(bool createdByPropertiesBlock = false);
~JSSourceValue();
void apply(ValueHandler *handler) { handler->handle(this); }
ValuePtr clone() const;
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; }
void setSourceUsesBaseFlag() { m_flags |= SourceUsesBase; }
bool sourceUsesBase() const { return m_flags.testFlag(SourceUsesBase); }
bool sourceUsesOuter() const { return m_flags.testFlag(SourceUsesOuter); }
bool sourceUsesOriginal() const { return m_flags.testFlag(SourceUsesOriginal); }
bool isInExportItem() const { return m_exportScope; }
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); }
void setDefiningItem(Item *item);
Item *exportScope() const;
void setExportScope(Item *exportScope);
private:
QStringRef m_sourceCode;
int m_line;
int m_column;
FileContextPtr m_file;
Flags m_flags;
JSSourceValuePtr m_baseValue;
QList<Alternative> m_alternatives;
Item *m_exportScope;
};
class ItemValue : public Value
{
ItemValue(Item *item, bool createdByPropertiesBlock);
public:
static ItemValuePtr create(Item *item, bool createdByPropertiesBlock = false);
Item *item() const { return m_item; }
void setItem(Item *item) { m_item = item; }
private:
void apply(ValueHandler *handler) override { handler->handle(this); }
ValuePtr clone() const override;
Item *m_item;
};
class VariantValue : public Value
{
VariantValue(const QVariant &v);
public:
static VariantValuePtr create(const QVariant &v = QVariant());
void apply(ValueHandler *handler) { handler->handle(this); }
ValuePtr clone() const;
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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