Files
qt-creator/src/libs/utils/stringutils.h
Tobias Hunger 4e96f2ce22 MacroExpander: Prevent loop with subproviders
Prevent a loop where a subprovider of a macroexpander creates
the macroexpander itself.

Change-Id: Id2f3e29651aeb22c818091d8c785a6ea01545463
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
2017-06-20 12:53:38 +00:00

77 lines
3.1 KiB
C++

/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
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#pragma once
#include "utils_global.h"
QT_BEGIN_NAMESPACE
class QStringList;
QT_END_NAMESPACE
namespace Utils {
// Create a usable settings key from a category,
// for example Editor|C++ -> Editor_C__
QTCREATOR_UTILS_EXPORT QString settingsKey(const QString &category);
// Return the common prefix part of a string list:
// "C:\foo\bar1" "C:\foo\bar2" -> "C:\foo\bar"
QTCREATOR_UTILS_EXPORT QString commonPrefix(const QStringList &strings);
// Return the common path of a list of files:
// "C:\foo\bar1" "C:\foo\bar2" -> "C:\foo"
QTCREATOR_UTILS_EXPORT QString commonPath(const QStringList &files);
// On Linux/Mac replace user's home path with ~
// Uses cleaned path and tries to use absolute path of "path" if possible
// If path is not sub of home path, or when running on Windows, returns the input
QTCREATOR_UTILS_EXPORT QString withTildeHomePath(const QString &path);
class QTCREATOR_UTILS_EXPORT AbstractMacroExpander
{
public:
virtual ~AbstractMacroExpander() {}
// Not const, as it may change the state of the expander.
//! Find an expando to replace and provide a replacement string.
//! \param str The string to scan
//! \param pos Position to start scan on input, found position on output
//! \param ret Replacement string on output
//! \return Length of string part to replace, zero if no (further) matches found
virtual int findMacro(const QString &str, int *pos, QString *ret);
//! Provide a replacement string for an expando
//! \param name The name of the expando
//! \param ret Replacement string on output
//! \return True if the expando was found
virtual bool resolveMacro(const QString &name, QString *ret, QSet<AbstractMacroExpander *> &seen) = 0;
private:
bool expandNestedMacros(const QString &str, int *pos, QString *ret);
};
QTCREATOR_UTILS_EXPORT void expandMacros(QString *str, AbstractMacroExpander *mx);
QTCREATOR_UTILS_EXPORT QString expandMacros(const QString &str, AbstractMacroExpander *mx);
} // namespace Utils