/usr/include/clang/AST/StmtVisitor.h is in libclang-dev 3.0-6ubuntu3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 | //===--- StmtVisitor.h - Visitor for Stmt subclasses ------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the StmtVisitor and ConstStmtVisitor interfaces.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_STMTVISITOR_H
#define LLVM_CLANG_AST_STMTVISITOR_H
#include "clang/AST/ExprCXX.h"
#include "clang/AST/ExprObjC.h"
#include "clang/AST/StmtCXX.h"
#include "clang/AST/StmtObjC.h"
namespace clang {
template <typename T> struct make_ptr { typedef T *type; };
template <typename T> struct make_const_ptr { typedef const T *type; };
/// StmtVisitorBase - This class implements a simple visitor for Stmt
/// subclasses. Since Expr derives from Stmt, this also includes support for
/// visiting Exprs.
template<template <typename> class Ptr, typename ImplClass, typename RetTy=void>
class StmtVisitorBase {
public:
#define PTR(CLASS) typename Ptr<CLASS>::type
#define DISPATCH(NAME, CLASS) \
return static_cast<ImplClass*>(this)->Visit ## NAME(static_cast<PTR(CLASS)>(S))
RetTy Visit(PTR(Stmt) S) {
// If we have a binary expr, dispatch to the subcode of the binop. A smart
// optimizer (e.g. LLVM) will fold this comparison into the switch stmt
// below.
if (PTR(BinaryOperator) BinOp = dyn_cast<BinaryOperator>(S)) {
switch (BinOp->getOpcode()) {
default: llvm_unreachable("Unknown binary operator!");
case BO_PtrMemD: DISPATCH(BinPtrMemD, BinaryOperator);
case BO_PtrMemI: DISPATCH(BinPtrMemI, BinaryOperator);
case BO_Mul: DISPATCH(BinMul, BinaryOperator);
case BO_Div: DISPATCH(BinDiv, BinaryOperator);
case BO_Rem: DISPATCH(BinRem, BinaryOperator);
case BO_Add: DISPATCH(BinAdd, BinaryOperator);
case BO_Sub: DISPATCH(BinSub, BinaryOperator);
case BO_Shl: DISPATCH(BinShl, BinaryOperator);
case BO_Shr: DISPATCH(BinShr, BinaryOperator);
case BO_LT: DISPATCH(BinLT, BinaryOperator);
case BO_GT: DISPATCH(BinGT, BinaryOperator);
case BO_LE: DISPATCH(BinLE, BinaryOperator);
case BO_GE: DISPATCH(BinGE, BinaryOperator);
case BO_EQ: DISPATCH(BinEQ, BinaryOperator);
case BO_NE: DISPATCH(BinNE, BinaryOperator);
case BO_And: DISPATCH(BinAnd, BinaryOperator);
case BO_Xor: DISPATCH(BinXor, BinaryOperator);
case BO_Or : DISPATCH(BinOr, BinaryOperator);
case BO_LAnd: DISPATCH(BinLAnd, BinaryOperator);
case BO_LOr : DISPATCH(BinLOr, BinaryOperator);
case BO_Assign: DISPATCH(BinAssign, BinaryOperator);
case BO_MulAssign: DISPATCH(BinMulAssign, CompoundAssignOperator);
case BO_DivAssign: DISPATCH(BinDivAssign, CompoundAssignOperator);
case BO_RemAssign: DISPATCH(BinRemAssign, CompoundAssignOperator);
case BO_AddAssign: DISPATCH(BinAddAssign, CompoundAssignOperator);
case BO_SubAssign: DISPATCH(BinSubAssign, CompoundAssignOperator);
case BO_ShlAssign: DISPATCH(BinShlAssign, CompoundAssignOperator);
case BO_ShrAssign: DISPATCH(BinShrAssign, CompoundAssignOperator);
case BO_AndAssign: DISPATCH(BinAndAssign, CompoundAssignOperator);
case BO_OrAssign: DISPATCH(BinOrAssign, CompoundAssignOperator);
case BO_XorAssign: DISPATCH(BinXorAssign, CompoundAssignOperator);
case BO_Comma: DISPATCH(BinComma, BinaryOperator);
}
} else if (PTR(UnaryOperator) UnOp = dyn_cast<UnaryOperator>(S)) {
switch (UnOp->getOpcode()) {
default: llvm_unreachable("Unknown unary operator!");
case UO_PostInc: DISPATCH(UnaryPostInc, UnaryOperator);
case UO_PostDec: DISPATCH(UnaryPostDec, UnaryOperator);
case UO_PreInc: DISPATCH(UnaryPreInc, UnaryOperator);
case UO_PreDec: DISPATCH(UnaryPreDec, UnaryOperator);
case UO_AddrOf: DISPATCH(UnaryAddrOf, UnaryOperator);
case UO_Deref: DISPATCH(UnaryDeref, UnaryOperator);
case UO_Plus: DISPATCH(UnaryPlus, UnaryOperator);
case UO_Minus: DISPATCH(UnaryMinus, UnaryOperator);
case UO_Not: DISPATCH(UnaryNot, UnaryOperator);
case UO_LNot: DISPATCH(UnaryLNot, UnaryOperator);
case UO_Real: DISPATCH(UnaryReal, UnaryOperator);
case UO_Imag: DISPATCH(UnaryImag, UnaryOperator);
case UO_Extension: DISPATCH(UnaryExtension, UnaryOperator);
}
}
// Top switch stmt: dispatch to VisitFooStmt for each FooStmt.
switch (S->getStmtClass()) {
default: llvm_unreachable("Unknown stmt kind!");
#define ABSTRACT_STMT(STMT)
#define STMT(CLASS, PARENT) \
case Stmt::CLASS ## Class: DISPATCH(CLASS, CLASS);
#include "clang/AST/StmtNodes.inc"
}
}
// If the implementation chooses not to implement a certain visit method, fall
// back on VisitExpr or whatever else is the superclass.
#define STMT(CLASS, PARENT) \
RetTy Visit ## CLASS(PTR(CLASS) S) { DISPATCH(PARENT, PARENT); }
#include "clang/AST/StmtNodes.inc"
// If the implementation doesn't implement binary operator methods, fall back
// on VisitBinaryOperator.
#define BINOP_FALLBACK(NAME) \
RetTy VisitBin ## NAME(PTR(BinaryOperator) S) { \
DISPATCH(BinaryOperator, BinaryOperator); \
}
BINOP_FALLBACK(PtrMemD) BINOP_FALLBACK(PtrMemI)
BINOP_FALLBACK(Mul) BINOP_FALLBACK(Div) BINOP_FALLBACK(Rem)
BINOP_FALLBACK(Add) BINOP_FALLBACK(Sub) BINOP_FALLBACK(Shl)
BINOP_FALLBACK(Shr)
BINOP_FALLBACK(LT) BINOP_FALLBACK(GT) BINOP_FALLBACK(LE)
BINOP_FALLBACK(GE) BINOP_FALLBACK(EQ) BINOP_FALLBACK(NE)
BINOP_FALLBACK(And) BINOP_FALLBACK(Xor) BINOP_FALLBACK(Or)
BINOP_FALLBACK(LAnd) BINOP_FALLBACK(LOr)
BINOP_FALLBACK(Assign)
BINOP_FALLBACK(Comma)
#undef BINOP_FALLBACK
// If the implementation doesn't implement compound assignment operator
// methods, fall back on VisitCompoundAssignOperator.
#define CAO_FALLBACK(NAME) \
RetTy VisitBin ## NAME(PTR(CompoundAssignOperator) S) { \
DISPATCH(CompoundAssignOperator, CompoundAssignOperator); \
}
CAO_FALLBACK(MulAssign) CAO_FALLBACK(DivAssign) CAO_FALLBACK(RemAssign)
CAO_FALLBACK(AddAssign) CAO_FALLBACK(SubAssign) CAO_FALLBACK(ShlAssign)
CAO_FALLBACK(ShrAssign) CAO_FALLBACK(AndAssign) CAO_FALLBACK(OrAssign)
CAO_FALLBACK(XorAssign)
#undef CAO_FALLBACK
// If the implementation doesn't implement unary operator methods, fall back
// on VisitUnaryOperator.
#define UNARYOP_FALLBACK(NAME) \
RetTy VisitUnary ## NAME(PTR(UnaryOperator) S) { \
DISPATCH(UnaryOperator, UnaryOperator); \
}
UNARYOP_FALLBACK(PostInc) UNARYOP_FALLBACK(PostDec)
UNARYOP_FALLBACK(PreInc) UNARYOP_FALLBACK(PreDec)
UNARYOP_FALLBACK(AddrOf) UNARYOP_FALLBACK(Deref)
UNARYOP_FALLBACK(Plus) UNARYOP_FALLBACK(Minus)
UNARYOP_FALLBACK(Not) UNARYOP_FALLBACK(LNot)
UNARYOP_FALLBACK(Real) UNARYOP_FALLBACK(Imag)
UNARYOP_FALLBACK(Extension)
#undef UNARYOP_FALLBACK
// Base case, ignore it. :)
RetTy VisitStmt(PTR(Stmt) Node) { return RetTy(); }
#undef PTR
#undef DISPATCH
};
/// StmtVisitor - This class implements a simple visitor for Stmt subclasses.
/// Since Expr derives from Stmt, this also includes support for visiting Exprs.
///
/// This class does not preserve constness of Stmt pointers (see also
/// ConstStmtVisitor).
template<typename ImplClass, typename RetTy=void>
class StmtVisitor
: public StmtVisitorBase<make_ptr, ImplClass, RetTy> {};
/// ConstStmtVisitor - This class implements a simple visitor for Stmt
/// subclasses. Since Expr derives from Stmt, this also includes support for
/// visiting Exprs.
///
/// This class preserves constness of Stmt pointers (see also StmtVisitor).
template<typename ImplClass, typename RetTy=void>
class ConstStmtVisitor
: public StmtVisitorBase<make_const_ptr, ImplClass, RetTy> {};
} // end namespace clang
#endif
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