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_FUNCTIONREFERENCE
9 #define SKSL_FUNCTIONREFERENCE
10 
11 #include "SkSLContext.h"
12 #include "SkSLExpression.h"
13 #include "SkSLFunctionDeclaration.h"
14 
15 namespace SkSL {
16 
17 /**
18  * An identifier referring to a function name. This is an intermediate value: FunctionReferences are
19  * always eventually replaced by FunctionCalls in valid programs.
20  */
21 struct FunctionReference : public Expression {
FunctionReferenceFunctionReference22     FunctionReference(const Context& context, int offset,
23                       std::vector<const FunctionDeclaration*> function)
24     : INHERITED(offset, kFunctionReference_Kind, *context.fInvalid_Type)
25     , fFunctions(function) {}
26 
hasSideEffectsFunctionReference27     bool hasSideEffects() const override {
28         return false;
29     }
30 
cloneFunctionReference31     std::unique_ptr<Expression> clone() const override {
32         return std::unique_ptr<Expression>(new FunctionReference(fOffset, fFunctions, &fType));
33     }
34 
descriptionFunctionReference35     String description() const override {
36         return String("<function>");
37     }
38 
39     const std::vector<const FunctionDeclaration*> fFunctions;
40 
41     typedef Expression INHERITED;
42 
43 private:
FunctionReferenceFunctionReference44     FunctionReference(int offset, std::vector<const FunctionDeclaration*> function,
45                       const Type* type)
46     : INHERITED(offset, kFunctionReference_Kind, *type)
47     , fFunctions(function) {}};
48 
49 } // namespace
50 
51 #endif
52