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_IFSTATEMENT 9 #define SKSL_IFSTATEMENT 10 11 #include "src/sksl/SkSLPosition.h" 12 #include "src/sksl/ir/SkSLExpression.h" 13 #include "src/sksl/ir/SkSLIRNode.h" 14 #include "src/sksl/ir/SkSLStatement.h" 15 16 #include <memory> 17 #include <string> 18 #include <utility> 19 20 namespace SkSL { 21 22 class Context; 23 24 /** 25 * An 'if' statement. 26 */ 27 class IfStatement final : public Statement { 28 public: 29 inline static constexpr Kind kIRNodeKind = Kind::kIf; 30 IfStatement(Position pos,std::unique_ptr<Expression> test,std::unique_ptr<Statement> ifTrue,std::unique_ptr<Statement> ifFalse)31 IfStatement(Position pos, std::unique_ptr<Expression> test, 32 std::unique_ptr<Statement> ifTrue, std::unique_ptr<Statement> ifFalse) 33 : INHERITED(pos, kIRNodeKind) 34 , fTest(std::move(test)) 35 , fIfTrue(std::move(ifTrue)) 36 , fIfFalse(std::move(ifFalse)) {} 37 38 // Creates a potentially-simplified form of the if-statement. Typechecks and coerces the test 39 // expression; reports errors via ErrorReporter. 40 static std::unique_ptr<Statement> Convert(const Context& context, 41 Position pos, 42 std::unique_ptr<Expression> test, 43 std::unique_ptr<Statement> ifTrue, 44 std::unique_ptr<Statement> ifFalse); 45 46 // Creates a potentially-simplified form of the if-statement; reports errors via ASSERT. 47 static std::unique_ptr<Statement> Make(const Context& context, 48 Position pos, 49 std::unique_ptr<Expression> test, 50 std::unique_ptr<Statement> ifTrue, 51 std::unique_ptr<Statement> ifFalse); 52 test()53 std::unique_ptr<Expression>& test() { 54 return fTest; 55 } 56 test()57 const std::unique_ptr<Expression>& test() const { 58 return fTest; 59 } 60 ifTrue()61 std::unique_ptr<Statement>& ifTrue() { 62 return fIfTrue; 63 } 64 ifTrue()65 const std::unique_ptr<Statement>& ifTrue() const { 66 return fIfTrue; 67 } 68 ifFalse()69 std::unique_ptr<Statement>& ifFalse() { 70 return fIfFalse; 71 } 72 ifFalse()73 const std::unique_ptr<Statement>& ifFalse() const { 74 return fIfFalse; 75 } 76 77 std::string description() const override; 78 79 private: 80 std::unique_ptr<Expression> fTest; 81 std::unique_ptr<Statement> fIfTrue; 82 std::unique_ptr<Statement> fIfFalse; 83 84 using INHERITED = Statement; 85 }; 86 87 } // namespace SkSL 88 89 #endif 90