26 struct Expression : public IRNode {  struct
27     enum Kind {
51     Expression(int offset, Kind kind, const Type& type)  in Expression()  argument
69     virtual bool compareConstant(const Context& context, const Expression& other) const {  in compareConstant()  argument
90      * Returns true if evaluating the expression potentially has side effects. Expressions may never  argument
103     virtual std::unique_ptr<Expression> constantPropagate(const IRGenerator& irGenerator,  in constantPropagate()  argument
108     virtual int coercionCost(const Type& target) const {  in coercionCost()
116     virtual SKSL_FLOAT getFVecComponent(int n) const {  in getFVecComponent()
140     virtual std::unique_ptr<Expression> clone() const = 0;  argument
142     const Kind fKind;
143     const Type& fType;
145     typedef IRNode INHERITED;