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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                  const Type* type = nullptr)
22     : INHERITED(offset, kFloatLiteral_Kind, type ? *type : *context.fFloat_Type)
23     , fValue(value) {}
24 
descriptionFloatLiteral25     String description() const override {
26         return to_string(fValue);
27     }
28 
hasSideEffectsFloatLiteral29     bool hasSideEffects() const override {
30         return false;
31     }
32 
isConstantFloatLiteral33     bool isConstant() const override {
34         return true;
35     }
36 
compareConstantFloatLiteral37     bool compareConstant(const Context& context, const Expression& other) const override {
38         FloatLiteral& f = (FloatLiteral&) other;
39         return fValue == f.fValue;
40     }
41 
getConstantFloatFloatLiteral42     double getConstantFloat() const override {
43         return fValue;
44     }
45 
46     const double fValue;
47 
48     typedef Expression INHERITED;
49 };
50 
51 } // namespace
52 
53 #endif
54