118 lines
3.2 KiB
C++
118 lines
3.2 KiB
C++
#ifndef STAR_DIRECTIVES_HPP
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#define STAR_DIRECTIVES_HPP
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#include "StarImageProcessing.hpp"
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#include "StarHash.hpp"
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#include "StarDataStream.hpp"
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#include "StarStringView.hpp"
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#include "StarThread.hpp"
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namespace Star {
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STAR_CLASS(Directives);
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STAR_CLASS(DirectivesGroup);
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STAR_EXCEPTION(DirectivesException, StarException);
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// Kae: My attempt at reducing memory allocation and per-frame string parsing for extremely long directives
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class Directives {
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public:
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struct Shared;
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struct Entry {
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mutable ImageOperation operation;
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size_t begin;
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size_t length;
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ImageOperation const& loadOperation(Shared const& parent) const;
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StringView string(Shared const& parent) const;
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Entry(ImageOperation&& newOperation, size_t begin, size_t end);
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Entry(ImageOperation const& newOperation, size_t begin, size_t end);
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Entry(Entry const& other);
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};
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struct Shared {
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List<Entry> entries;
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String string;
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StringView prefix;
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size_t hash = 0;
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mutable Mutex mutex;
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bool empty() const;
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Shared(List<Entry>&& givenEntries, String&& givenString, StringView givenPrefix);
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};
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Directives();
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Directives(String const& directives);
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Directives(String&& directives);
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Directives(const char* directives);
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void loadOperations() const;
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void parse(String&& directives);
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String string() const;
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StringView prefix() const;
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String const* stringPtr() const;
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String buildString() const;
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String& addToString(String& out) const;
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size_t hash() const;
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size_t size() const;
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bool empty() const;
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operator bool() const;
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friend DataStream& operator>>(DataStream& ds, Directives& directives);
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friend DataStream& operator<<(DataStream& ds, Directives const& directives);
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std::shared_ptr<Shared const> shared;
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};
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class DirectivesGroup {
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public:
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DirectivesGroup();
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DirectivesGroup(String const& directives);
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DirectivesGroup(String&& directives);
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bool empty() const;
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operator bool() const;
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bool compare(DirectivesGroup const& other) const;
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void append(Directives const& other);
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void clear();
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DirectivesGroup& operator+=(Directives const& other);
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String toString() const;
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void addToString(String& string) const;
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typedef function<void(Directives::Entry const&, Directives const&)> DirectivesCallback;
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typedef function<bool(Directives::Entry const&, Directives const&)> AbortableDirectivesCallback;
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void forEach(DirectivesCallback callback) const;
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bool forEachAbortable(AbortableDirectivesCallback callback) const;
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Image applyNewImage(const Image& image) const;
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void applyExistingImage(Image& image) const;
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size_t hash() const;
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const List<Directives>& list() const;
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friend bool operator==(DirectivesGroup const& a, DirectivesGroup const& b);
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friend bool operator!=(DirectivesGroup const& a, DirectivesGroup const& b);
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friend DataStream& operator>>(DataStream& ds, DirectivesGroup& directives);
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friend DataStream& operator<<(DataStream& ds, DirectivesGroup const& directives);
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private:
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void buildString(String& string, const DirectivesGroup& directives) const;
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List<Directives> m_directives;
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size_t m_count;
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};
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template <>
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struct hash<DirectivesGroup> {
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size_t operator()(DirectivesGroup const& s) const;
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};
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typedef DirectivesGroup ImageDirectives;
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}
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#endif
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