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_EXTENSION 9 #define SKSL_EXTENSION 10 11 #include "src/sksl/SkSLPosition.h" 12 #include "src/sksl/ir/SkSLIRNode.h" 13 #include "src/sksl/ir/SkSLProgramElement.h" 14 15 #include <memory> 16 #include <string> 17 #include <string_view> 18 19 namespace SkSL { 20 21 class Context; 22 23 /** 24 * #extension <name> : enable 25 */ 26 class Extension final : public ProgramElement { 27 public: 28 inline static constexpr Kind kIRNodeKind = Kind::kExtension; 29 Extension(Position pos,std::string_view name)30 Extension(Position pos, std::string_view name) 31 : INHERITED(pos, kIRNodeKind) 32 , fName(name) {} 33 name()34 std::string_view name() const { 35 return fName; 36 } 37 38 // Reports errors via ErrorReporter. This may return null even if no error occurred; 39 // in particular, if the behavior text is `disabled`, no ProgramElement is necessary. 40 static std::unique_ptr<Extension> Convert(const Context& context, 41 Position pos, 42 std::string_view name, 43 std::string_view behaviorText); 44 45 // Asserts if an error is detected. 46 static std::unique_ptr<Extension> Make(const Context& context, 47 Position pos, 48 std::string_view name); 49 description()50 std::string description() const override { 51 return "#extension " + std::string(this->name()) + " : enable"; 52 } 53 54 private: 55 std::string_view fName; 56 57 using INHERITED = ProgramElement; 58 }; 59 60 } // namespace SkSL 61 62 #endif 63