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Lines 2481-2502
typedef uint Flags;
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| 2481 |
#define Q_DECLARE_OPERATORS_FOR_FLAGS(Flags) |
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#define Q_DECLARE_OPERATORS_FOR_FLAGS(Flags) |
| 2482 |
#endif /* Q_NO_TYPESAFE_FLAGS */ |
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#endif /* Q_NO_TYPESAFE_FLAGS */ |
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#if defined(Q_CC_GNU) && !defined(Q_CC_INTEL) && !defined(Q_CC_RVCT) |
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#if (defined(Q_CC_GNU) && !defined(Q_CC_RVCT)) |
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/* make use of typeof-extension */ |
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/* make use of typeof-extension */ |
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template <typename T> |
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template <typename T> |
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class QForeachContainer { |
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class QForeachContainer { |
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public: |
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public: |
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inline QForeachContainer(const T& t) : c(t), brk(0), i(c.begin()), e(c.end()) { } |
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inline QForeachContainer(const T& t) : c(t), i(c.begin()), e(c.end()), control(1) { } |
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const T c; |
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const T c; |
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int brk; |
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int brk; |
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typename T::const_iterator i, e; |
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typename T::const_iterator i, e; |
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int control; |
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}; |
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}; |
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// Explanation of the control word: |
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// - it's initialized to 1 |
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// - that means both the inner and outer loops start |
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// - if there were no breaks, at the end of the inner loop, it's set to 0, which |
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// causes it to exit (the inner loop is run exactly once) |
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// - at the end of the outer loop, it's inverted, so it becomes 1 again, allowing |
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// the outer loop to continue executing |
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// - if there was a break inside the inner loop, it will exit with control still |
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// set to 1; in that case, the outer loop will invert it to 0 and will exit too |
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#define Q_FOREACH(variable, container) \ |
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#define Q_FOREACH(variable, container) \ |
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for (QForeachContainer<__typeof__(container)> _container_(container); \ |
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for (QForeachContainer<__typeof__(container)> _container_(container); \ |
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!_container_.brk && _container_.i != _container_.e; \ |
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_container_.control && _container_.i != _container_.e; \ |
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__extension__ ({ ++_container_.brk; ++_container_.i; })) \ |
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++_container_.i, _container_.control ^= 1) \ |
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for (variable = *_container_.i;; __extension__ ({--_container_.brk; break;})) |
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for (variable = *_container_.i; _container_.control; _container_.control = 0) |
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#else |
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#else |