1 /* 2 * Copyright 2016 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SKSL_FLOATLITERAL 9 #define SKSL_FLOATLITERAL 10 11 #include "SkSLContext.h" 12 #include "SkSLExpression.h" 13 14 namespace SkSL { 15 16 /** 17 * A literal floating point number. 18 */ 19 struct FloatLiteral : public Expression { 20 FloatLiteral(const Context& context, int offset, double value) 21 : INHERITED(offset, kFloatLiteral_Kind, *context.fFloat_Type) 22 , fValue(value) {} 23 24 FloatLiteral(int offset, double value, const Type* type) 25 : INHERITED(offset, kFloatLiteral_Kind, *type) 26 , fValue(value) {} 27 28 String description() const override { 29 return to_string(fValue); 30 } 31 32 bool hasSideEffects() const override { 33 return false; 34 } 35 36 bool isConstant() const override { 37 return true; 38 } 39 40 bool compareConstant(const Context& context, const Expression& other) const override { 41 FloatLiteral& f = (FloatLiteral&) other; 42 return fValue == f.fValue; 43 } 44 45 double getConstantFloat() const override { 46 return fValue; 47 } 48 49 std::unique_ptr<Expression> clone() const override { 50 return std::unique_ptr<Expression>(new FloatLiteral(fOffset, fValue, &fType)); 51 } 52 53 const double fValue; 54 55 typedef Expression INHERITED; 56 }; 57 58 } // namespace 59 60 #endif 61
