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#pragma once |
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#include |
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#include |
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namespace xs { |
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using xs::my_perl; |
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struct Scalar : Sv { |
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static const Scalar undef; |
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static const Scalar yes; |
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static const Scalar no; |
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static Scalar create () { return Scalar(newSV(0), NONE); } |
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static Scalar noinc (SV* val) { return Scalar(val, NONE); } |
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static Scalar noinc (GV* val) { return Scalar(val, NONE); } |
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Scalar (std::nullptr_t = nullptr) {} |
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Scalar (SV* sv, bool policy = INCREMENT) : Sv(sv, policy) { _validate(); } |
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Scalar (GV* sv, bool policy = INCREMENT) : Sv(sv, policy) {} |
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Scalar (const Scalar& oth) : Sv(oth) {} |
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Scalar (Scalar&& oth) : Sv(std::move(oth)) {} |
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Scalar (const Sv& oth) : Scalar(oth.get()) {} |
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Scalar (Sv&& oth) : Sv(std::move(oth)) { _validate(); } |
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Scalar (const Array&) = delete; |
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Scalar (const Hash&) = delete; |
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Scalar (const Sub&) = delete; |
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Scalar (const Io&) = delete; |
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Scalar& operator= (SV* val) { |
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Sv::operator=(val); |
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_validate(); |
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return *this; |
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} |
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Scalar& operator= (GV* val) { |
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Sv::operator=(val); |
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return *this; |
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} |
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Scalar& operator= (const Scalar& oth) { |
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Sv::operator=(oth.sv); |
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return *this; |
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} |
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Scalar& operator= (Scalar&& oth) { |
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Sv::operator=(std::move(oth)); |
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return *this; |
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} |
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Scalar& operator= (const Sv& oth) { return operator=(oth.get()); } |
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Scalar& operator= (Sv&& oth) { |
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Sv::operator=(std::move(oth)); |
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_validate(); |
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return *this; |
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} |
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Scalar& operator= (const Array&) = delete; |
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Scalar& operator= (const Hash&) = delete; |
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Scalar& operator= (const Sub&) = delete; |
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Scalar& operator= (const Io&) = delete; |
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void set (SV* val) { Sv::operator=(val); } |
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void set (GV* val) { Sv::operator=(val); } |
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operator AV* () const = delete; |
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operator HV* () const = delete; |
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operator CV* () const = delete; |
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operator IO* () const = delete; |
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template panda::enable_if_one_of_t* get () const { return (T*)sv; } |
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void upgrade (svtype type) { |
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if (type > SVt_PVMG && type != SVt_PVGV) throw std::logic_error("can't upgrade Scalar to something bigger than PVMG (and != PVGV)"); |
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Sv::upgrade(type); |
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} |
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template T as_string () const; |
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template T as_number () const; |
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static void __at_perl_destroy (); |
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private: |
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void _validate () { |
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if (!sv) return; |
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if (is_scalar_unsafe()) return; |
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reset(); |
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throw std::invalid_argument("SV is not a scalar value"); |
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} |
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}; |
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} |