| 1 | //===--- ByteCodeStmtGen.h - Code generator for expressions -----*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | // |
| 9 | // Defines the constexpr bytecode compiler. |
| 10 | // |
| 11 | //===----------------------------------------------------------------------===// |
| 12 | |
| 13 | #ifndef LLVM_CLANG_AST_INTERP_BYTECODESTMTGEN_H |
| 14 | #define LLVM_CLANG_AST_INTERP_BYTECODESTMTGEN_H |
| 15 | |
| 16 | #include "ByteCodeEmitter.h" |
| 17 | #include "ByteCodeExprGen.h" |
| 18 | #include "EvalEmitter.h" |
| 19 | #include "PrimType.h" |
| 20 | #include "clang/AST/StmtVisitor.h" |
| 21 | |
| 22 | namespace clang { |
| 23 | namespace interp { |
| 24 | |
| 25 | template <class Emitter> class LoopScope; |
| 26 | template <class Emitter> class SwitchScope; |
| 27 | template <class Emitter> class LabelScope; |
| 28 | |
| 29 | /// Compilation context for statements. |
| 30 | template <class Emitter> |
| 31 | class ByteCodeStmtGen final : public ByteCodeExprGen<Emitter> { |
| 32 | using LabelTy = typename Emitter::LabelTy; |
| 33 | using AddrTy = typename Emitter::AddrTy; |
| 34 | using OptLabelTy = std::optional<LabelTy>; |
| 35 | using CaseMap = llvm::DenseMap<const SwitchCase *, LabelTy>; |
| 36 | |
| 37 | public: |
| 38 | template<typename... Tys> |
| 39 | ByteCodeStmtGen(Tys&&... Args) |
| 40 | : ByteCodeExprGen<Emitter>(std::forward<Tys>(Args)...) {} |
| 41 | |
| 42 | protected: |
| 43 | bool visitFunc(const FunctionDecl *F) override; |
| 44 | |
| 45 | private: |
| 46 | friend class LabelScope<Emitter>; |
| 47 | friend class LoopScope<Emitter>; |
| 48 | friend class SwitchScope<Emitter>; |
| 49 | |
| 50 | // Statement visitors. |
| 51 | bool visitStmt(const Stmt *S); |
| 52 | bool visitCompoundStmt(const CompoundStmt *S); |
| 53 | bool visitLoopBody(const Stmt *S); |
| 54 | bool visitDeclStmt(const DeclStmt *DS); |
| 55 | bool visitReturnStmt(const ReturnStmt *RS); |
| 56 | bool visitIfStmt(const IfStmt *IS); |
| 57 | bool visitWhileStmt(const WhileStmt *S); |
| 58 | bool visitDoStmt(const DoStmt *S); |
| 59 | bool visitForStmt(const ForStmt *S); |
| 60 | bool visitCXXForRangeStmt(const CXXForRangeStmt *S); |
| 61 | bool visitBreakStmt(const BreakStmt *S); |
| 62 | bool visitContinueStmt(const ContinueStmt *S); |
| 63 | bool visitSwitchStmt(const SwitchStmt *S); |
| 64 | bool visitCaseStmt(const CaseStmt *S); |
| 65 | bool visitDefaultStmt(const DefaultStmt *S); |
| 66 | bool visitAttributedStmt(const AttributedStmt *S); |
| 67 | bool visitCXXTryStmt(const CXXTryStmt *S); |
| 68 | |
| 69 | bool emitLambdaStaticInvokerBody(const CXXMethodDecl *MD); |
| 70 | |
| 71 | /// Type of the expression returned by the function. |
| 72 | std::optional<PrimType> ReturnType; |
| 73 | |
| 74 | /// Switch case mapping. |
| 75 | CaseMap CaseLabels; |
| 76 | |
| 77 | /// Point to break to. |
| 78 | OptLabelTy BreakLabel; |
| 79 | /// Point to continue to. |
| 80 | OptLabelTy ContinueLabel; |
| 81 | /// Default case label. |
| 82 | OptLabelTy DefaultLabel; |
| 83 | }; |
| 84 | |
| 85 | extern template class ByteCodeStmtGen<ByteCodeEmitter>; |
| 86 | extern template class ByteCodeExprGen<EvalEmitter>; |
| 87 | |
| 88 | } // namespace interp |
| 89 | } // namespace clang |
| 90 | |
| 91 | #endif |
| 92 |