39 struct IRHelpers {  struct
40     IRHelpers(const Context& c) : fContext(c) {}  in IRHelpers()  function
46     std::unique_ptr<Expression> Ref(const Variable* var) const {  in Ref()
50     std::unique_ptr<Expression> Field(const Variable* var, int idx) const {  in Field()
55     std::unique_ptr<Expression> Swizzle(std::unique_ptr<Expression> base, ComponentArray c) const {  in Swizzle()
60     std::unique_ptr<Expression> Index(std::unique_ptr<Expression> base,  in Index()
66     std::unique_ptr<Expression> Binary(std::unique_ptr<Expression> l,  in Binary()
73     std::unique_ptr<Expression> Mul(std::unique_ptr<Expression> l,  in Mul()
78     std::unique_ptr<Expression> Add(std::unique_ptr<Expression> l,  in Add()
83     std::unique_ptr<Expression> Float(float value) const {  in Float()
87     std::unique_ptr<Expression> Int(int value) const {  in Int()
91     std::unique_ptr<Expression> CtorXYZW(std::unique_ptr<Expression> xy,  in CtorXYZW()
102     std::unique_ptr<Statement> Assign(std::unique_ptr<Expression> l,  in Assign()
109     const Context& fContext;