6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
200 lines
8.8 KiB
C++
200 lines
8.8 KiB
C++
//===- StmtVisitor.h - Visitor for Stmt subclasses --------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the StmtVisitor and ConstStmtVisitor interfaces.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_AST_STMTVISITOR_H
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#define LLVM_CLANG_AST_STMTVISITOR_H
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#include "clang/AST/ExprCXX.h"
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#include "clang/AST/ExprConcepts.h"
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#include "clang/AST/ExprObjC.h"
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#include "clang/AST/ExprOpenMP.h"
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#include "clang/AST/Stmt.h"
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#include "clang/AST/StmtCXX.h"
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#include "clang/AST/StmtObjC.h"
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#include "clang/AST/StmtOpenACC.h"
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#include "clang/AST/StmtOpenMP.h"
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#include "clang/Basic/LLVM.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/ErrorHandling.h"
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#include <utility>
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namespace clang {
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/// StmtVisitorBase - This class implements a simple visitor for Stmt
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/// subclasses. Since Expr derives from Stmt, this also includes support for
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/// visiting Exprs.
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template<template <typename> class Ptr, typename ImplClass, typename RetTy=void,
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class... ParamTys>
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class StmtVisitorBase {
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public:
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#define PTR(CLASS) typename Ptr<CLASS>::type
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#define DISPATCH(NAME, CLASS) \
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return static_cast<ImplClass*>(this)->Visit ## NAME( \
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static_cast<PTR(CLASS)>(S), std::forward<ParamTys>(P)...)
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RetTy Visit(PTR(Stmt) S, ParamTys... P) {
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// If we have a binary expr, dispatch to the subcode of the binop. A smart
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// optimizer (e.g. LLVM) will fold this comparison into the switch stmt
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// below.
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if (PTR(BinaryOperator) BinOp = dyn_cast<BinaryOperator>(S)) {
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switch (BinOp->getOpcode()) {
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case BO_PtrMemD: DISPATCH(BinPtrMemD, BinaryOperator);
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case BO_PtrMemI: DISPATCH(BinPtrMemI, BinaryOperator);
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case BO_Mul: DISPATCH(BinMul, BinaryOperator);
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case BO_Div: DISPATCH(BinDiv, BinaryOperator);
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case BO_Rem: DISPATCH(BinRem, BinaryOperator);
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case BO_Add: DISPATCH(BinAdd, BinaryOperator);
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case BO_Sub: DISPATCH(BinSub, BinaryOperator);
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case BO_Shl: DISPATCH(BinShl, BinaryOperator);
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case BO_Shr: DISPATCH(BinShr, BinaryOperator);
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case BO_LT: DISPATCH(BinLT, BinaryOperator);
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case BO_GT: DISPATCH(BinGT, BinaryOperator);
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case BO_LE: DISPATCH(BinLE, BinaryOperator);
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case BO_GE: DISPATCH(BinGE, BinaryOperator);
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case BO_EQ: DISPATCH(BinEQ, BinaryOperator);
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case BO_NE: DISPATCH(BinNE, BinaryOperator);
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case BO_Cmp: DISPATCH(BinCmp, BinaryOperator);
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case BO_And: DISPATCH(BinAnd, BinaryOperator);
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case BO_Xor: DISPATCH(BinXor, BinaryOperator);
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case BO_Or : DISPATCH(BinOr, BinaryOperator);
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case BO_LAnd: DISPATCH(BinLAnd, BinaryOperator);
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case BO_LOr : DISPATCH(BinLOr, BinaryOperator);
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case BO_Assign: DISPATCH(BinAssign, BinaryOperator);
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case BO_MulAssign: DISPATCH(BinMulAssign, CompoundAssignOperator);
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case BO_DivAssign: DISPATCH(BinDivAssign, CompoundAssignOperator);
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case BO_RemAssign: DISPATCH(BinRemAssign, CompoundAssignOperator);
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case BO_AddAssign: DISPATCH(BinAddAssign, CompoundAssignOperator);
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case BO_SubAssign: DISPATCH(BinSubAssign, CompoundAssignOperator);
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case BO_ShlAssign: DISPATCH(BinShlAssign, CompoundAssignOperator);
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case BO_ShrAssign: DISPATCH(BinShrAssign, CompoundAssignOperator);
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case BO_AndAssign: DISPATCH(BinAndAssign, CompoundAssignOperator);
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case BO_OrAssign: DISPATCH(BinOrAssign, CompoundAssignOperator);
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case BO_XorAssign: DISPATCH(BinXorAssign, CompoundAssignOperator);
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case BO_Comma: DISPATCH(BinComma, BinaryOperator);
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}
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} else if (PTR(UnaryOperator) UnOp = dyn_cast<UnaryOperator>(S)) {
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switch (UnOp->getOpcode()) {
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case UO_PostInc: DISPATCH(UnaryPostInc, UnaryOperator);
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case UO_PostDec: DISPATCH(UnaryPostDec, UnaryOperator);
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case UO_PreInc: DISPATCH(UnaryPreInc, UnaryOperator);
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case UO_PreDec: DISPATCH(UnaryPreDec, UnaryOperator);
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case UO_AddrOf: DISPATCH(UnaryAddrOf, UnaryOperator);
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case UO_Deref: DISPATCH(UnaryDeref, UnaryOperator);
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case UO_Plus: DISPATCH(UnaryPlus, UnaryOperator);
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case UO_Minus: DISPATCH(UnaryMinus, UnaryOperator);
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case UO_Not: DISPATCH(UnaryNot, UnaryOperator);
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case UO_LNot: DISPATCH(UnaryLNot, UnaryOperator);
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case UO_Real: DISPATCH(UnaryReal, UnaryOperator);
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case UO_Imag: DISPATCH(UnaryImag, UnaryOperator);
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case UO_Extension: DISPATCH(UnaryExtension, UnaryOperator);
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case UO_Coawait: DISPATCH(UnaryCoawait, UnaryOperator);
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}
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}
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// Top switch stmt: dispatch to VisitFooStmt for each FooStmt.
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switch (S->getStmtClass()) {
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default: llvm_unreachable("Unknown stmt kind!");
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#define ABSTRACT_STMT(STMT)
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#define STMT(CLASS, PARENT) \
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case Stmt::CLASS ## Class: DISPATCH(CLASS, CLASS);
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#include "clang/AST/StmtNodes.inc"
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}
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}
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// If the implementation chooses not to implement a certain visit method, fall
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// back on VisitExpr or whatever else is the superclass.
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#define STMT(CLASS, PARENT) \
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RetTy Visit ## CLASS(PTR(CLASS) S, ParamTys... P) { DISPATCH(PARENT, PARENT); }
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#include "clang/AST/StmtNodes.inc"
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// If the implementation doesn't implement binary operator methods, fall back
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// on VisitBinaryOperator.
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#define BINOP_FALLBACK(NAME) \
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RetTy VisitBin ## NAME(PTR(BinaryOperator) S, ParamTys... P) { \
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DISPATCH(BinaryOperator, BinaryOperator); \
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}
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BINOP_FALLBACK(PtrMemD) BINOP_FALLBACK(PtrMemI)
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BINOP_FALLBACK(Mul) BINOP_FALLBACK(Div) BINOP_FALLBACK(Rem)
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BINOP_FALLBACK(Add) BINOP_FALLBACK(Sub) BINOP_FALLBACK(Shl)
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BINOP_FALLBACK(Shr)
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BINOP_FALLBACK(LT) BINOP_FALLBACK(GT) BINOP_FALLBACK(LE)
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BINOP_FALLBACK(GE) BINOP_FALLBACK(EQ) BINOP_FALLBACK(NE)
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BINOP_FALLBACK(Cmp)
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BINOP_FALLBACK(And) BINOP_FALLBACK(Xor) BINOP_FALLBACK(Or)
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BINOP_FALLBACK(LAnd) BINOP_FALLBACK(LOr)
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BINOP_FALLBACK(Assign)
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BINOP_FALLBACK(Comma)
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#undef BINOP_FALLBACK
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// If the implementation doesn't implement compound assignment operator
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// methods, fall back on VisitCompoundAssignOperator.
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#define CAO_FALLBACK(NAME) \
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RetTy VisitBin ## NAME(PTR(CompoundAssignOperator) S, ParamTys... P) { \
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DISPATCH(CompoundAssignOperator, CompoundAssignOperator); \
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}
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CAO_FALLBACK(MulAssign) CAO_FALLBACK(DivAssign) CAO_FALLBACK(RemAssign)
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CAO_FALLBACK(AddAssign) CAO_FALLBACK(SubAssign) CAO_FALLBACK(ShlAssign)
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CAO_FALLBACK(ShrAssign) CAO_FALLBACK(AndAssign) CAO_FALLBACK(OrAssign)
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CAO_FALLBACK(XorAssign)
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#undef CAO_FALLBACK
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// If the implementation doesn't implement unary operator methods, fall back
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// on VisitUnaryOperator.
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#define UNARYOP_FALLBACK(NAME) \
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RetTy VisitUnary ## NAME(PTR(UnaryOperator) S, ParamTys... P) { \
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DISPATCH(UnaryOperator, UnaryOperator); \
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}
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UNARYOP_FALLBACK(PostInc) UNARYOP_FALLBACK(PostDec)
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UNARYOP_FALLBACK(PreInc) UNARYOP_FALLBACK(PreDec)
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UNARYOP_FALLBACK(AddrOf) UNARYOP_FALLBACK(Deref)
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UNARYOP_FALLBACK(Plus) UNARYOP_FALLBACK(Minus)
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UNARYOP_FALLBACK(Not) UNARYOP_FALLBACK(LNot)
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UNARYOP_FALLBACK(Real) UNARYOP_FALLBACK(Imag)
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UNARYOP_FALLBACK(Extension) UNARYOP_FALLBACK(Coawait)
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#undef UNARYOP_FALLBACK
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// Base case, ignore it. :)
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RetTy VisitStmt(PTR(Stmt) Node, ParamTys... P) { return RetTy(); }
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#undef PTR
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#undef DISPATCH
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};
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/// StmtVisitor - This class implements a simple visitor for Stmt subclasses.
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/// Since Expr derives from Stmt, this also includes support for visiting Exprs.
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///
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/// This class does not preserve constness of Stmt pointers (see also
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/// ConstStmtVisitor).
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template <typename ImplClass, typename RetTy = void, typename... ParamTys>
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class StmtVisitor
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: public StmtVisitorBase<std::add_pointer, ImplClass, RetTy, ParamTys...> {
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};
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/// ConstStmtVisitor - This class implements a simple visitor for Stmt
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/// subclasses. Since Expr derives from Stmt, this also includes support for
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/// visiting Exprs.
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///
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/// This class preserves constness of Stmt pointers (see also StmtVisitor).
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template <typename ImplClass, typename RetTy = void, typename... ParamTys>
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class ConstStmtVisitor : public StmtVisitorBase<llvm::make_const_ptr, ImplClass,
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RetTy, ParamTys...> {};
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} // namespace clang
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#endif // LLVM_CLANG_AST_STMTVISITOR_H
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