66 struct Program {  struct
67     using Settings = ProgramSettings;  argument
87     Program(std::unique_ptr<String> source,  in Program()  argument
108     ~Program() {  in ~Program()  argument
155             using Shared = std::vector<const ProgramElement*>::const_iterator;  argument
178         friend struct Program;  argument
180         ElementsCollection(const Program& program) : fProgram(program) {}  in ElementsCollection()  argument
181         const Program& fProgram;  argument
189     // Can be used to iterate over *just* the elements owned by the Program, not shared builtins.  argument
191     std::vector<std::unique_ptr<ProgramElement>>& ownedElements() { return fElements; }  in ownedElements()  argument
192     const std::vector<std::unique_ptr<ProgramElement>>& ownedElements() const { return fElements; }  in ownedElements()  argument
202     const ProgramUsage* usage() const { return fUsage.get(); }  in usage()  argument
205     std::unique_ptr<ProgramConfig> fConfig;  argument
214     std::vector<std::unique_ptr<ProgramElement>> fElements;  argument
215     std::vector<const ProgramElement*>           fSharedElements;  argument
217     std::unique_ptr<ProgramUsage> fUsage;  argument
219     friend class Compiler;
220     friend class Inliner;             // fUsage
221     friend class SPIRVCodeGenerator;  // fModifiers