65 struct Program {  struct
66     using Settings = ProgramSettings;  argument
76     Program(std::unique_ptr<String> source,  in Program()  argument
97     ~Program() {  in ~Program()  argument
140             using Shared = std::vector<const ProgramElement*>::const_iterator;  argument
163         friend struct Program;  argument
165         ElementsCollection(const Program& program) : fProgram(program) {}  in ElementsCollection()  argument
166         const Program& fProgram;  argument
176         for (const ProgramElement* e : this->elements()) {  in description()  argument
182     const ProgramUsage* usage() const { return fUsage.get(); }  in usage()  argument
185     std::unique_ptr<ProgramConfig> fConfig;  argument
192     std::vector<std::unique_ptr<ProgramElement>> fOwnedElements;  argument
195     std::vector<const ProgramElement*> fSharedElements;  argument
200     std::unique_ptr<ProgramUsage> fUsage;  argument
202     friend class Compiler;
203     friend class Inliner;             // fUsage
204     friend class SPIRVCodeGenerator;  // fModifiers