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llvm-project/clang/lib/AST/StmtPrinter.cpp

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//===--- StmtPrinter.cpp - Printing implementation for Stmt ASTs ----------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements the Stmt::dumpPretty/Stmt::printPretty methods, which
// pretty print the AST back out to C code.
//
//===----------------------------------------------------------------------===//
#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/PrettyPrinter.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/Basic/CharInfo.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/Format.h"
using namespace clang;
//===----------------------------------------------------------------------===//
// StmtPrinter Visitor
//===----------------------------------------------------------------------===//
namespace {
class StmtPrinter : public StmtVisitor<StmtPrinter> {
raw_ostream &OS;
unsigned IndentLevel;
clang::PrinterHelper* Helper;
PrintingPolicy Policy;
public:
StmtPrinter(raw_ostream &os, PrinterHelper* helper,
const PrintingPolicy &Policy,
unsigned Indentation = 0)
: OS(os), IndentLevel(Indentation), Helper(helper), Policy(Policy) {}
void PrintStmt(Stmt *S) {
PrintStmt(S, Policy.Indentation);
}
void PrintStmt(Stmt *S, int SubIndent) {
IndentLevel += SubIndent;
if (S && isa<Expr>(S)) {
// If this is an expr used in a stmt context, indent and newline it.
Indent();
Visit(S);
OS << ";\n";
} else if (S) {
Visit(S);
} else {
Indent() << "<<<NULL STATEMENT>>>\n";
}
IndentLevel -= SubIndent;
}
void PrintRawCompoundStmt(CompoundStmt *S);
void PrintRawDecl(Decl *D);
void PrintRawDeclStmt(const DeclStmt *S);
void PrintRawIfStmt(IfStmt *If);
void PrintRawCXXCatchStmt(CXXCatchStmt *Catch);
void PrintCallArgs(CallExpr *E);
void PrintRawSEHExceptHandler(SEHExceptStmt *S);
void PrintRawSEHFinallyStmt(SEHFinallyStmt *S);
void PrintOMPExecutableDirective(OMPExecutableDirective *S);
void PrintExpr(Expr *E) {
if (E)
Visit(E);
else
OS << "<null expr>";
}
raw_ostream &Indent(int Delta = 0) {
for (int i = 0, e = IndentLevel+Delta; i < e; ++i)
OS << " ";
return OS;
}
void Visit(Stmt* S) {
if (Helper && Helper->handledStmt(S,OS))
return;
else StmtVisitor<StmtPrinter>::Visit(S);
}
void VisitStmt(Stmt *Node) LLVM_ATTRIBUTE_UNUSED {
Indent() << "<<unknown stmt type>>\n";
}
void VisitExpr(Expr *Node) LLVM_ATTRIBUTE_UNUSED {
OS << "<<unknown expr type>>";
}
void VisitCXXNamedCastExpr(CXXNamedCastExpr *Node);
#define ABSTRACT_STMT(CLASS)
#define STMT(CLASS, PARENT) \
void Visit##CLASS(CLASS *Node);
#include "clang/AST/StmtNodes.inc"
};
}
//===----------------------------------------------------------------------===//
// Stmt printing methods.
//===----------------------------------------------------------------------===//
/// PrintRawCompoundStmt - Print a compound stmt without indenting the {, and
/// with no newline after the }.
void StmtPrinter::PrintRawCompoundStmt(CompoundStmt *Node) {
OS << "{\n";
for (auto *I : Node->body())
PrintStmt(I);
Indent() << "}";
}
void StmtPrinter::PrintRawDecl(Decl *D) {
D->print(OS, Policy, IndentLevel);
}
void StmtPrinter::PrintRawDeclStmt(const DeclStmt *S) {
SmallVector<Decl*, 2> Decls(S->decls());
Decl::printGroup(Decls.data(), Decls.size(), OS, Policy, IndentLevel);
}
void StmtPrinter::VisitNullStmt(NullStmt *Node) {
Indent() << ";\n";
}
void StmtPrinter::VisitDeclStmt(DeclStmt *Node) {
Indent();
PrintRawDeclStmt(Node);
OS << ";\n";
}
void StmtPrinter::VisitCompoundStmt(CompoundStmt *Node) {
Indent();
PrintRawCompoundStmt(Node);
OS << "\n";
}
void StmtPrinter::VisitCaseStmt(CaseStmt *Node) {
Indent(-1) << "case ";
PrintExpr(Node->getLHS());
if (Node->getRHS()) {
OS << " ... ";
PrintExpr(Node->getRHS());
}
OS << ":\n";
PrintStmt(Node->getSubStmt(), 0);
}
void StmtPrinter::VisitDefaultStmt(DefaultStmt *Node) {
Indent(-1) << "default:\n";
PrintStmt(Node->getSubStmt(), 0);
}
void StmtPrinter::VisitLabelStmt(LabelStmt *Node) {
Indent(-1) << Node->getName() << ":\n";
PrintStmt(Node->getSubStmt(), 0);
}
void StmtPrinter::VisitAttributedStmt(AttributedStmt *Node) {
OS << "[[";
bool first = true;
for (ArrayRef<const Attr*>::iterator it = Node->getAttrs().begin(),
end = Node->getAttrs().end();
it != end; ++it) {
if (!first) {
OS << ", ";
first = false;
}
// TODO: check this
(*it)->printPretty(OS, Policy);
}
OS << "]] ";
PrintStmt(Node->getSubStmt(), 0);
}
void StmtPrinter::PrintRawIfStmt(IfStmt *If) {
OS << "if (";
if (const DeclStmt *DS = If->getConditionVariableDeclStmt())
PrintRawDeclStmt(DS);
else
PrintExpr(If->getCond());
OS << ')';
if (CompoundStmt *CS = dyn_cast<CompoundStmt>(If->getThen())) {
OS << ' ';
PrintRawCompoundStmt(CS);
OS << (If->getElse() ? ' ' : '\n');
} else {
OS << '\n';
PrintStmt(If->getThen());
if (If->getElse()) Indent();
}
if (Stmt *Else = If->getElse()) {
OS << "else";
if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Else)) {
OS << ' ';
PrintRawCompoundStmt(CS);
OS << '\n';
} else if (IfStmt *ElseIf = dyn_cast<IfStmt>(Else)) {
OS << ' ';
PrintRawIfStmt(ElseIf);
} else {
OS << '\n';
PrintStmt(If->getElse());
}
}
}
void StmtPrinter::VisitIfStmt(IfStmt *If) {
Indent();
PrintRawIfStmt(If);
}
void StmtPrinter::VisitSwitchStmt(SwitchStmt *Node) {
Indent() << "switch (";
if (const DeclStmt *DS = Node->getConditionVariableDeclStmt())
PrintRawDeclStmt(DS);
else
PrintExpr(Node->getCond());
OS << ")";
// Pretty print compoundstmt bodies (very common).
if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
OS << " ";
PrintRawCompoundStmt(CS);
OS << "\n";
} else {
OS << "\n";
PrintStmt(Node->getBody());
}
}
void StmtPrinter::VisitWhileStmt(WhileStmt *Node) {
Indent() << "while (";
if (const DeclStmt *DS = Node->getConditionVariableDeclStmt())
PrintRawDeclStmt(DS);
else
PrintExpr(Node->getCond());
OS << ")\n";
PrintStmt(Node->getBody());
}
void StmtPrinter::VisitDoStmt(DoStmt *Node) {
Indent() << "do ";
if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
PrintRawCompoundStmt(CS);
OS << " ";
} else {
OS << "\n";
PrintStmt(Node->getBody());
Indent();
}
OS << "while (";
PrintExpr(Node->getCond());
OS << ");\n";
}
void StmtPrinter::VisitForStmt(ForStmt *Node) {
Indent() << "for (";
if (Node->getInit()) {
if (DeclStmt *DS = dyn_cast<DeclStmt>(Node->getInit()))
PrintRawDeclStmt(DS);
else
PrintExpr(cast<Expr>(Node->getInit()));
}
OS << ";";
if (Node->getCond()) {
OS << " ";
PrintExpr(Node->getCond());
}
OS << ";";
if (Node->getInc()) {
OS << " ";
PrintExpr(Node->getInc());
}
OS << ") ";
if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
PrintRawCompoundStmt(CS);
OS << "\n";
} else {
OS << "\n";
PrintStmt(Node->getBody());
}
}
void StmtPrinter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *Node) {
Indent() << "for (";
if (DeclStmt *DS = dyn_cast<DeclStmt>(Node->getElement()))
PrintRawDeclStmt(DS);
else
PrintExpr(cast<Expr>(Node->getElement()));
OS << " in ";
PrintExpr(Node->getCollection());
OS << ") ";
if (CompoundStmt *CS = dyn_cast<CompoundStmt>(Node->getBody())) {
PrintRawCompoundStmt(CS);
OS << "\n";
} else {
OS << "\n";
PrintStmt(Node->getBody());
}
}
void StmtPrinter::VisitCXXForRangeStmt(CXXForRangeStmt *Node) {
Indent() << "for (";
PrintingPolicy SubPolicy(Policy);
SubPolicy.SuppressInitializers = true;
Node->getLoopVariable()->print(OS, SubPolicy, IndentLevel);
OS << " : ";
PrintExpr(Node->getRangeInit());
OS << ") {\n";
PrintStmt(Node->getBody());
Indent() << "}";
if (Policy.IncludeNewlines) OS << "\n";
}
void StmtPrinter::VisitMSDependentExistsStmt(MSDependentExistsStmt *Node) {
Indent();
if (Node->isIfExists())
OS << "__if_exists (";
else
OS << "__if_not_exists (";
if (NestedNameSpecifier *Qualifier
= Node->getQualifierLoc().getNestedNameSpecifier())
Qualifier->print(OS, Policy);
OS << Node->getNameInfo() << ") ";
PrintRawCompoundStmt(Node->getSubStmt());
}
void StmtPrinter::VisitGotoStmt(GotoStmt *Node) {
Indent() << "goto " << Node->getLabel()->getName() << ";";
if (Policy.IncludeNewlines) OS << "\n";
}
void StmtPrinter::VisitIndirectGotoStmt(IndirectGotoStmt *Node) {
Indent() << "goto *";
PrintExpr(Node->getTarget());
OS << ";";
if (Policy.IncludeNewlines) OS << "\n";
}
void StmtPrinter::VisitContinueStmt(ContinueStmt *Node) {
Indent() << "continue;";
if (Policy.IncludeNewlines) OS << "\n";
}
void StmtPrinter::VisitBreakStmt(BreakStmt *Node) {
Indent() << "break;";
if (Policy.IncludeNewlines) OS << "\n";
}
void StmtPrinter::VisitReturnStmt(ReturnStmt *Node) {
Indent() << "return";
if (Node->getRetValue()) {
OS << " ";
PrintExpr(Node->getRetValue());
}
OS << ";";
if (Policy.IncludeNewlines) OS << "\n";
}
void StmtPrinter::VisitGCCAsmStmt(GCCAsmStmt *Node) {
Indent() << "asm ";
if (Node->isVolatile())
OS << "volatile ";
OS << "(";
VisitStringLiteral(Node->getAsmString());
// Outputs
if (Node->getNumOutputs() != 0 || Node->getNumInputs() != 0 ||
Node->getNumClobbers() != 0)
OS << " : ";
for (unsigned i = 0, e = Node->getNumOutputs(); i != e; ++i) {
if (i != 0)
OS << ", ";
if (!Node->getOutputName(i).empty()) {
OS << '[';
OS << Node->getOutputName(i);
OS << "] ";
}
VisitStringLiteral(Node->getOutputConstraintLiteral(i));
OS << " ";
Visit(Node->getOutputExpr(i));
}
// Inputs
if (Node->getNumInputs() != 0 || Node->getNumClobbers() != 0)
OS << " : ";
for (unsigned i = 0, e = Node->getNumInputs(); i != e; ++i) {
if (i != 0)
OS << ", ";
if (!Node->getInputName(i).empty()) {
OS << '[';
OS << Node->getInputName(i);
OS << "] ";
}
VisitStringLiteral(Node->getInputConstraintLiteral(i));
OS << " ";
Visit(Node->getInputExpr(i));
}
// Clobbers
if (Node->getNumClobbers() != 0)
OS << " : ";
for (unsigned i = 0, e = Node->getNumClobbers(); i != e; ++i) {
if (i != 0)
OS << ", ";
VisitStringLiteral(Node->getClobberStringLiteral(i));
}
OS << ");";
if (Policy.IncludeNewlines) OS << "\n";
}
void StmtPrinter::VisitMSAsmStmt(MSAsmStmt *Node) {
// FIXME: Implement MS style inline asm statement printer.
Indent() << "__asm ";
if (Node->hasBraces())
OS << "{\n";
OS << Node->getAsmString() << "\n";
if (Node->hasBraces())
Indent() << "}\n";
}
void StmtPrinter::VisitCapturedStmt(CapturedStmt *Node) {
PrintStmt(Node->getCapturedDecl()->getBody());
}
void StmtPrinter::VisitObjCAtTryStmt(ObjCAtTryStmt *Node) {
Indent() << "@try";
if (CompoundStmt *TS = dyn_cast<CompoundStmt>(Node->getTryBody())) {
PrintRawCompoundStmt(TS);
OS << "\n";
}
for (unsigned I = 0, N = Node->getNumCatchStmts(); I != N; ++I) {
ObjCAtCatchStmt *catchStmt = Node->getCatchStmt(I);
Indent() << "@catch(";
if (catchStmt->getCatchParamDecl()) {
if (Decl *DS = catchStmt->getCatchParamDecl())
PrintRawDecl(DS);
}
OS << ")";
if (CompoundStmt *CS = dyn_cast<CompoundStmt>(catchStmt->getCatchBody())) {
PrintRawCompoundStmt(CS);
OS << "\n";
}
}
if (ObjCAtFinallyStmt *FS = static_cast<ObjCAtFinallyStmt *>(
Node->getFinallyStmt())) {
Indent() << "@finally";
PrintRawCompoundStmt(dyn_cast<CompoundStmt>(FS->getFinallyBody()));
OS << "\n";
}
}
void StmtPrinter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *Node) {
}
void StmtPrinter::VisitObjCAtCatchStmt (ObjCAtCatchStmt *Node) {
Indent() << "@catch (...) { /* todo */ } \n";
}
void StmtPrinter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *Node) {
Indent() << "@throw";
if (Node->getThrowExpr()) {
OS << " ";
PrintExpr(Node->getThrowExpr());
}
OS << ";\n";
}
void StmtPrinter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *Node) {
Indent() << "@synchronized (";
PrintExpr(Node->getSynchExpr());
OS << ")";
PrintRawCompoundStmt(Node->getSynchBody());
OS << "\n";
}
void StmtPrinter::VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *Node) {
Indent() << "@autoreleasepool";
PrintRawCompoundStmt(dyn_cast<CompoundStmt>(Node->getSubStmt()));
OS << "\n";
}
void StmtPrinter::PrintRawCXXCatchStmt(CXXCatchStmt *Node) {
OS << "catch (";
if (Decl *ExDecl = Node->getExceptionDecl())
PrintRawDecl(ExDecl);
else
OS << "...";
OS << ") ";
PrintRawCompoundStmt(cast<CompoundStmt>(Node->getHandlerBlock()));
}
void StmtPrinter::VisitCXXCatchStmt(CXXCatchStmt *Node) {
Indent();
PrintRawCXXCatchStmt(Node);
OS << "\n";
}
void StmtPrinter::VisitCXXTryStmt(CXXTryStmt *Node) {
Indent() << "try ";
PrintRawCompoundStmt(Node->getTryBlock());
for (unsigned i = 0, e = Node->getNumHandlers(); i < e; ++i) {
OS << " ";
PrintRawCXXCatchStmt(Node->getHandler(i));
}
OS << "\n";
}
void StmtPrinter::VisitSEHTryStmt(SEHTryStmt *Node) {
Indent() << (Node->getIsCXXTry() ? "try " : "__try ");
PrintRawCompoundStmt(Node->getTryBlock());
SEHExceptStmt *E = Node->getExceptHandler();
SEHFinallyStmt *F = Node->getFinallyHandler();
if(E)
PrintRawSEHExceptHandler(E);
else {
assert(F && "Must have a finally block...");
PrintRawSEHFinallyStmt(F);
}
OS << "\n";
}
void StmtPrinter::PrintRawSEHFinallyStmt(SEHFinallyStmt *Node) {
OS << "__finally ";
PrintRawCompoundStmt(Node->getBlock());
OS << "\n";
}
void StmtPrinter::PrintRawSEHExceptHandler(SEHExceptStmt *Node) {
OS << "__except (";
VisitExpr(Node->getFilterExpr());
OS << ")\n";
PrintRawCompoundStmt(Node->getBlock());
OS << "\n";
}
void StmtPrinter::VisitSEHExceptStmt(SEHExceptStmt *Node) {
Indent();
PrintRawSEHExceptHandler(Node);
OS << "\n";
}
void StmtPrinter::VisitSEHFinallyStmt(SEHFinallyStmt *Node) {
Indent();
PrintRawSEHFinallyStmt(Node);
OS << "\n";
}
//===----------------------------------------------------------------------===//
// OpenMP clauses printing methods
//===----------------------------------------------------------------------===//
namespace {
class OMPClausePrinter : public OMPClauseVisitor<OMPClausePrinter> {
raw_ostream &OS;
const PrintingPolicy &Policy;
/// \brief Process clauses with list of variables.
template <typename T>
void VisitOMPClauseList(T *Node, char StartSym);
public:
OMPClausePrinter(raw_ostream &OS, const PrintingPolicy &Policy)
: OS(OS), Policy(Policy) { }
#define OPENMP_CLAUSE(Name, Class) \
void Visit##Class(Class *S);
#include "clang/Basic/OpenMPKinds.def"
};
void OMPClausePrinter::VisitOMPIfClause(OMPIfClause *Node) {
OS << "if(";
Node->getCondition()->printPretty(OS, 0, Policy, 0);
OS << ")";
}
void OMPClausePrinter::VisitOMPNumThreadsClause(OMPNumThreadsClause *Node) {
OS << "num_threads(";
Node->getNumThreads()->printPretty(OS, 0, Policy, 0);
OS << ")";
}
void OMPClausePrinter::VisitOMPSafelenClause(OMPSafelenClause *Node) {
OS << "safelen(";
Node->getSafelen()->printPretty(OS, 0, Policy, 0);
OS << ")";
}
void OMPClausePrinter::VisitOMPDefaultClause(OMPDefaultClause *Node) {
OS << "default("
<< getOpenMPSimpleClauseTypeName(OMPC_default, Node->getDefaultKind())
<< ")";
}
void OMPClausePrinter::VisitOMPProcBindClause(OMPProcBindClause *Node) {
OS << "proc_bind("
<< getOpenMPSimpleClauseTypeName(OMPC_proc_bind, Node->getProcBindKind())
<< ")";
}
template<typename T>
void OMPClausePrinter::VisitOMPClauseList(T *Node, char StartSym) {
for (typename T::varlist_iterator I = Node->varlist_begin(),
E = Node->varlist_end();
I != E; ++I) {
if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(*I)) {
OS << (I == Node->varlist_begin() ? StartSym : ',');
cast<NamedDecl>(DRE->getDecl())->printQualifiedName(OS);
} else {
OS << (I == Node->varlist_begin() ? StartSym : ',');
(*I)->printPretty(OS, 0, Policy, 0);
}
}
}
void OMPClausePrinter::VisitOMPPrivateClause(OMPPrivateClause *Node) {
if (!Node->varlist_empty()) {
OS << "private";
VisitOMPClauseList(Node, '(');
OS << ")";
}
}
void OMPClausePrinter::VisitOMPFirstprivateClause(OMPFirstprivateClause *Node) {
if (!Node->varlist_empty()) {
OS << "firstprivate";
VisitOMPClauseList(Node, '(');
OS << ")";
}
}
void OMPClausePrinter::VisitOMPSharedClause(OMPSharedClause *Node) {
if (!Node->varlist_empty()) {
OS << "shared";
VisitOMPClauseList(Node, '(');
OS << ")";
}
}
void OMPClausePrinter::VisitOMPLinearClause(OMPLinearClause *Node) {
if (!Node->varlist_empty()) {
OS << "linear";
VisitOMPClauseList(Node, '(');
if (Node->getStep() != 0) {
OS << ": ";
Node->getStep()->printPretty(OS, 0, Policy, 0);
}
OS << ")";
}
}
void OMPClausePrinter::VisitOMPCopyinClause(OMPCopyinClause *Node) {
if (!Node->varlist_empty()) {
OS << "copyin";
VisitOMPClauseList(Node, '(');
OS << ")";
}
}
}
//===----------------------------------------------------------------------===//
// OpenMP directives printing methods
//===----------------------------------------------------------------------===//
void StmtPrinter::PrintOMPExecutableDirective(OMPExecutableDirective *S) {
OMPClausePrinter Printer(OS, Policy);
ArrayRef<OMPClause *> Clauses = S->clauses();
for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
I != E; ++I)
if (*I && !(*I)->isImplicit()) {
Printer.Visit(*I);
OS << ' ';
}
OS << "\n";
if (S->getAssociatedStmt()) {
assert(isa<CapturedStmt>(S->getAssociatedStmt()) &&
"Expected captured statement!");
Stmt *CS = cast<CapturedStmt>(S->getAssociatedStmt())->getCapturedStmt();
PrintStmt(CS);
}
}
void StmtPrinter::VisitOMPParallelDirective(OMPParallelDirective *Node) {
Indent() << "#pragma omp parallel ";
PrintOMPExecutableDirective(Node);
}
void StmtPrinter::VisitOMPSimdDirective(OMPSimdDirective *Node) {
Indent() << "#pragma omp simd ";
PrintOMPExecutableDirective(Node);
}
//===----------------------------------------------------------------------===//
// Expr printing methods.
//===----------------------------------------------------------------------===//
void StmtPrinter::VisitDeclRefExpr(DeclRefExpr *Node) {
if (NestedNameSpecifier *Qualifier = Node->getQualifier())
Qualifier->print(OS, Policy);
if (Node->hasTemplateKeyword())
OS << "template ";
OS << Node->getNameInfo();
if (Node->hasExplicitTemplateArgs())
TemplateSpecializationType::PrintTemplateArgumentList(
OS, Node->getTemplateArgs(), Node->getNumTemplateArgs(), Policy);
}
void StmtPrinter::VisitDependentScopeDeclRefExpr(
DependentScopeDeclRefExpr *Node) {
if (NestedNameSpecifier *Qualifier = Node->getQualifier())
Qualifier->print(OS, Policy);
if (Node->hasTemplateKeyword())
OS << "template ";
OS << Node->getNameInfo();
if (Node->hasExplicitTemplateArgs())
TemplateSpecializationType::PrintTemplateArgumentList(
OS, Node->getTemplateArgs(), Node->getNumTemplateArgs(), Policy);
}
void StmtPrinter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *Node) {
if (Node->getQualifier())
Node->getQualifier()->print(OS, Policy);
if (Node->hasTemplateKeyword())
OS << "template ";
OS << Node->getNameInfo();
if (Node->hasExplicitTemplateArgs())
TemplateSpecializationType::PrintTemplateArgumentList(
OS, Node->getTemplateArgs(), Node->getNumTemplateArgs(), Policy);
}
void StmtPrinter::VisitObjCIvarRefExpr(ObjCIvarRefExpr *Node) {
if (Node->getBase()) {
PrintExpr(Node->getBase());
OS << (Node->isArrow() ? "->" : ".");
}
OS << *Node->getDecl();
}
void StmtPrinter::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *Node) {
if (Node->isSuperReceiver())
OS << "super.";
else if (Node->isObjectReceiver() && Node->getBase()) {
PrintExpr(Node->getBase());
OS << ".";
} else if (Node->isClassReceiver() && Node->getClassReceiver()) {
OS << Node->getClassReceiver()->getName() << ".";
}
if (Node->isImplicitProperty())
Node->getImplicitPropertyGetter()->getSelector().print(OS);
else
OS << Node->getExplicitProperty()->getName();
}
void StmtPrinter::VisitObjCSubscriptRefExpr(ObjCSubscriptRefExpr *Node) {
PrintExpr(Node->getBaseExpr());
OS << "[";
PrintExpr(Node->getKeyExpr());
OS << "]";
}
void StmtPrinter::VisitPredefinedExpr(PredefinedExpr *Node) {
switch (Node->getIdentType()) {
default:
llvm_unreachable("unknown case");
case PredefinedExpr::Func:
OS << "__func__";
break;
case PredefinedExpr::Function:
OS << "__FUNCTION__";
break;
case PredefinedExpr::FuncDName:
OS << "__FUNCDNAME__";
break;
case PredefinedExpr::FuncSig:
OS << "__FUNCSIG__";
break;
case PredefinedExpr::LFunction:
OS << "L__FUNCTION__";
break;
case PredefinedExpr::PrettyFunction:
OS << "__PRETTY_FUNCTION__";
break;
}
}
void StmtPrinter::VisitCharacterLiteral(CharacterLiteral *Node) {
unsigned value = Node->getValue();
switch (Node->getKind()) {
case CharacterLiteral::Ascii: break; // no prefix.
case CharacterLiteral::Wide: OS << 'L'; break;
case CharacterLiteral::UTF16: OS << 'u'; break;
case CharacterLiteral::UTF32: OS << 'U'; break;
}
switch (value) {
case '\\':
OS << "'\\\\'";
break;
case '\'':
OS << "'\\''";
break;
case '\a':
// TODO: K&R: the meaning of '\\a' is different in traditional C
OS << "'\\a'";
break;
case '\b':
OS << "'\\b'";
break;
// Nonstandard escape sequence.
/*case '\e':
OS << "'\\e'";
break;*/
case '\f':
OS << "'\\f'";
break;
case '\n':
OS << "'\\n'";
break;
case '\r':
OS << "'\\r'";
break;
case '\t':
OS << "'\\t'";
break;
case '\v':
OS << "'\\v'";
break;
default:
if (value < 256 && isPrintable((unsigned char)value))
OS << "'" << (char)value << "'";
else if (value < 256)
OS << "'\\x" << llvm::format("%02x", value) << "'";
else if (value <= 0xFFFF)
OS << "'\\u" << llvm::format("%04x", value) << "'";
else
OS << "'\\U" << llvm::format("%08x", value) << "'";
}
}
void StmtPrinter::VisitIntegerLiteral(IntegerLiteral *Node) {
bool isSigned = Node->getType()->isSignedIntegerType();
OS << Node->getValue().toString(10, isSigned);
// Emit suffixes. Integer literals are always a builtin integer type.
switch (Node->getType()->getAs<BuiltinType>()->getKind()) {
default: llvm_unreachable("Unexpected type for integer literal!");
// FIXME: The Short and UShort cases are to handle cases where a short
// integeral literal is formed during template instantiation. They should
// be removed when template instantiation no longer needs integer literals.
case BuiltinType::Short:
case BuiltinType::UShort:
case BuiltinType::Int: break; // no suffix.
case BuiltinType::UInt: OS << 'U'; break;
case BuiltinType::Long: OS << 'L'; break;
case BuiltinType::ULong: OS << "UL"; break;
case BuiltinType::LongLong: OS << "LL"; break;
case BuiltinType::ULongLong: OS << "ULL"; break;
case BuiltinType::Int128: OS << "i128"; break;
case BuiltinType::UInt128: OS << "Ui128"; break;
}
}
static void PrintFloatingLiteral(raw_ostream &OS, FloatingLiteral *Node,
bool PrintSuffix) {
SmallString<16> Str;
Node->getValue().toString(Str);
OS << Str;
if (Str.find_first_not_of("-0123456789") == StringRef::npos)
OS << '.'; // Trailing dot in order to separate from ints.
if (!PrintSuffix)
return;
// Emit suffixes. Float literals are always a builtin float type.
switch (Node->getType()->getAs<BuiltinType>()->getKind()) {
default: llvm_unreachable("Unexpected type for float literal!");
case BuiltinType::Half: break; // FIXME: suffix?
case BuiltinType::Double: break; // no suffix.
case BuiltinType::Float: OS << 'F'; break;
case BuiltinType::LongDouble: OS << 'L'; break;
}
}
void StmtPrinter::VisitFloatingLiteral(FloatingLiteral *Node) {
PrintFloatingLiteral(OS, Node, /*PrintSuffix=*/true);
}
void StmtPrinter::VisitImaginaryLiteral(ImaginaryLiteral *Node) {
PrintExpr(Node->getSubExpr());
OS << "i";
}
void StmtPrinter::VisitStringLiteral(StringLiteral *Str) {
Str->outputString(OS);
}
void StmtPrinter::VisitParenExpr(ParenExpr *Node) {
OS << "(";
PrintExpr(Node->getSubExpr());
OS << ")";
}
void StmtPrinter::VisitUnaryOperator(UnaryOperator *Node) {
if (!Node->isPostfix()) {
OS << UnaryOperator::getOpcodeStr(Node->getOpcode());
// Print a space if this is an "identifier operator" like __real, or if
// it might be concatenated incorrectly like '+'.
switch (Node->getOpcode()) {
default: break;
case UO_Real:
case UO_Imag:
case UO_Extension:
OS << ' ';
break;
case UO_Plus:
case UO_Minus:
if (isa<UnaryOperator>(Node->getSubExpr()))
OS << ' ';
break;
}
}
PrintExpr(Node->getSubExpr());
if (Node->isPostfix())
OS << UnaryOperator::getOpcodeStr(Node->getOpcode());
}
void StmtPrinter::VisitOffsetOfExpr(OffsetOfExpr *Node) {
OS << "__builtin_offsetof(";
Node->getTypeSourceInfo()->getType().print(OS, Policy);
OS << ", ";
bool PrintedSomething = false;
for (unsigned i = 0, n = Node->getNumComponents(); i < n; ++i) {
OffsetOfExpr::OffsetOfNode ON = Node->getComponent(i);
if (ON.getKind() == OffsetOfExpr::OffsetOfNode::Array) {
// Array node
OS << "[";
PrintExpr(Node->getIndexExpr(ON.getArrayExprIndex()));
OS << "]";
PrintedSomething = true;
continue;
}
// Skip implicit base indirections.
if (ON.getKind() == OffsetOfExpr::OffsetOfNode::Base)
continue;
// Field or identifier node.
IdentifierInfo *Id = ON.getFieldName();
if (!Id)
continue;
if (PrintedSomething)
OS << ".";
else
PrintedSomething = true;
OS << Id->getName();
}
OS << ")";
}
void StmtPrinter::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *Node){
switch(Node->getKind()) {
case UETT_SizeOf:
OS << "sizeof";
break;
case UETT_AlignOf:
if (Policy.LangOpts.CPlusPlus)
OS << "alignof";
else if (Policy.LangOpts.C11)
OS << "_Alignof";
else
OS << "__alignof";
break;
case UETT_VecStep:
OS << "vec_step";
break;
}
if (Node->isArgumentType()) {
OS << '(';
Node->getArgumentType().print(OS, Policy);
OS << ')';
} else {
OS << " ";
PrintExpr(Node->getArgumentExpr());
}
}
void StmtPrinter::VisitGenericSelectionExpr(GenericSelectionExpr *Node) {
OS << "_Generic(";
PrintExpr(Node->getControllingExpr());
for (unsigned i = 0; i != Node->getNumAssocs(); ++i) {
OS << ", ";
QualType T = Node->getAssocType(i);
if (T.isNull())
OS << "default";
else
T.print(OS, Policy);
OS << ": ";
PrintExpr(Node->getAssocExpr(i));
}
OS << ")";
}
void StmtPrinter::VisitArraySubscriptExpr(ArraySubscriptExpr *Node) {
PrintExpr(Node->getLHS());
OS << "[";
PrintExpr(Node->getRHS());
OS << "]";
}
void StmtPrinter::PrintCallArgs(CallExpr *Call) {
for (unsigned i = 0, e = Call->getNumArgs(); i != e; ++i) {
if (isa<CXXDefaultArgExpr>(Call->getArg(i))) {
// Don't print any defaulted arguments
break;
}
if (i) OS << ", ";
PrintExpr(Call->getArg(i));
}
}
void StmtPrinter::VisitCallExpr(CallExpr *Call) {
PrintExpr(Call->getCallee());
OS << "(";
PrintCallArgs(Call);
OS << ")";
}
void StmtPrinter::VisitMemberExpr(MemberExpr *Node) {
// FIXME: Suppress printing implicit bases (like "this")
PrintExpr(Node->getBase());
MemberExpr *ParentMember = dyn_cast<MemberExpr>(Node->getBase());
FieldDecl *ParentDecl = ParentMember
? dyn_cast<FieldDecl>(ParentMember->getMemberDecl()) : NULL;
if (!ParentDecl || !ParentDecl->isAnonymousStructOrUnion())
OS << (Node->isArrow() ? "->" : ".");
if (FieldDecl *FD = dyn_cast<FieldDecl>(Node->getMemberDecl()))
if (FD->isAnonymousStructOrUnion())
return;
if (NestedNameSpecifier *Qualifier = Node->getQualifier())
Qualifier->print(OS, Policy);
if (Node->hasTemplateKeyword())
OS << "template ";
OS << Node->getMemberNameInfo();
if (Node->hasExplicitTemplateArgs())
TemplateSpecializationType::PrintTemplateArgumentList(
OS, Node->getTemplateArgs(), Node->getNumTemplateArgs(), Policy);
}
void StmtPrinter::VisitObjCIsaExpr(ObjCIsaExpr *Node) {
PrintExpr(Node->getBase());
OS << (Node->isArrow() ? "->isa" : ".isa");
}
void StmtPrinter::VisitExtVectorElementExpr(ExtVectorElementExpr *Node) {
PrintExpr(Node->getBase());
OS << ".";
OS << Node->getAccessor().getName();
}
void StmtPrinter::VisitCStyleCastExpr(CStyleCastExpr *Node) {
OS << '(';
Node->getTypeAsWritten().print(OS, Policy);
OS << ')';
PrintExpr(Node->getSubExpr());
}
void StmtPrinter::VisitCompoundLiteralExpr(CompoundLiteralExpr *Node) {
OS << '(';
Node->getType().print(OS, Policy);
OS << ')';
PrintExpr(Node->getInitializer());
}
void StmtPrinter::VisitImplicitCastExpr(ImplicitCastExpr *Node) {
// No need to print anything, simply forward to the subexpression.
PrintExpr(Node->getSubExpr());
}
void StmtPrinter::VisitBinaryOperator(BinaryOperator *Node) {
PrintExpr(Node->getLHS());
OS << " " << BinaryOperator::getOpcodeStr(Node->getOpcode()) << " ";
PrintExpr(Node->getRHS());
}
void StmtPrinter::VisitCompoundAssignOperator(CompoundAssignOperator *Node) {
PrintExpr(Node->getLHS());
OS << " " << BinaryOperator::getOpcodeStr(Node->getOpcode()) << " ";
PrintExpr(Node->getRHS());
}
void StmtPrinter::VisitConditionalOperator(ConditionalOperator *Node) {
PrintExpr(Node->getCond());
OS << " ? ";
PrintExpr(Node->getLHS());
OS << " : ";
PrintExpr(Node->getRHS());
}
// GNU extensions.
void
StmtPrinter::VisitBinaryConditionalOperator(BinaryConditionalOperator *Node) {
PrintExpr(Node->getCommon());
OS << " ?: ";
PrintExpr(Node->getFalseExpr());
}
void StmtPrinter::VisitAddrLabelExpr(AddrLabelExpr *Node) {
OS << "&&" << Node->getLabel()->getName();
}
void StmtPrinter::VisitStmtExpr(StmtExpr *E) {
OS << "(";
PrintRawCompoundStmt(E->getSubStmt());
OS << ")";
}
void StmtPrinter::VisitChooseExpr(ChooseExpr *Node) {
OS << "__builtin_choose_expr(";
PrintExpr(Node->getCond());
OS << ", ";
PrintExpr(Node->getLHS());
OS << ", ";
PrintExpr(Node->getRHS());
OS << ")";
}
void StmtPrinter::VisitGNUNullExpr(GNUNullExpr *) {
OS << "__null";
}
void StmtPrinter::VisitShuffleVectorExpr(ShuffleVectorExpr *Node) {
OS << "__builtin_shufflevector(";
for (unsigned i = 0, e = Node->getNumSubExprs(); i != e; ++i) {
if (i) OS << ", ";
PrintExpr(Node->getExpr(i));
}
OS << ")";
}
void StmtPrinter::VisitConvertVectorExpr(ConvertVectorExpr *Node) {
OS << "__builtin_convertvector(";
PrintExpr(Node->getSrcExpr());
OS << ", ";
Node->getType().print(OS, Policy);
OS << ")";
}
void StmtPrinter::VisitInitListExpr(InitListExpr* Node) {
if (Node->getSyntacticForm()) {
Visit(Node->getSyntacticForm());
return;
}
OS << "{ ";
for (unsigned i = 0, e = Node->getNumInits(); i != e; ++i) {
if (i) OS << ", ";
if (Node->getInit(i))
PrintExpr(Node->getInit(i));
else
OS << "0";
}
OS << " }";
}
void StmtPrinter::VisitParenListExpr(ParenListExpr* Node) {
OS << "( ";
for (unsigned i = 0, e = Node->getNumExprs(); i != e; ++i) {
if (i) OS << ", ";
PrintExpr(Node->getExpr(i));
}
OS << " )";
}
void StmtPrinter::VisitDesignatedInitExpr(DesignatedInitExpr *Node) {
for (DesignatedInitExpr::designators_iterator D = Node->designators_begin(),
DEnd = Node->designators_end();
D != DEnd; ++D) {
if (D->isFieldDesignator()) {
if (D->getDotLoc().isInvalid())
OS << D->getFieldName()->getName() << ":";
else
OS << "." << D->getFieldName()->getName();
} else {
OS << "[";
if (D->isArrayDesignator()) {
PrintExpr(Node->getArrayIndex(*D));
} else {
PrintExpr(Node->getArrayRangeStart(*D));
OS << " ... ";
PrintExpr(Node->getArrayRangeEnd(*D));
}
OS << "]";
}
}
OS << " = ";
PrintExpr(Node->getInit());
}
void StmtPrinter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *Node) {
if (Policy.LangOpts.CPlusPlus) {
OS << "/*implicit*/";
Node->getType().print(OS, Policy);
OS << "()";
} else {
OS << "/*implicit*/(";
Node->getType().print(OS, Policy);
OS << ')';
if (Node->getType()->isRecordType())
OS << "{}";
else
OS << 0;
}
}
void StmtPrinter::VisitVAArgExpr(VAArgExpr *Node) {
OS << "__builtin_va_arg(";
PrintExpr(Node->getSubExpr());
OS << ", ";
Node->getType().print(OS, Policy);
OS << ")";
}
void StmtPrinter::VisitPseudoObjectExpr(PseudoObjectExpr *Node) {
PrintExpr(Node->getSyntacticForm());
}
void StmtPrinter::VisitAtomicExpr(AtomicExpr *Node) {
const char *Name = 0;
switch (Node->getOp()) {
#define BUILTIN(ID, TYPE, ATTRS)
#define ATOMIC_BUILTIN(ID, TYPE, ATTRS) \
case AtomicExpr::AO ## ID: \
Name = #ID "("; \
break;
#include "clang/Basic/Builtins.def"
}
OS << Name;
// AtomicExpr stores its subexpressions in a permuted order.
PrintExpr(Node->getPtr());
if (Node->getOp() != AtomicExpr::AO__c11_atomic_load &&
Node->getOp() != AtomicExpr::AO__atomic_load_n) {
OS << ", ";
PrintExpr(Node->getVal1());
}
if (Node->getOp() == AtomicExpr::AO__atomic_exchange ||
Node->isCmpXChg()) {
OS << ", ";
PrintExpr(Node->getVal2());
}
if (Node->getOp() == AtomicExpr::AO__atomic_compare_exchange ||
Node->getOp() == AtomicExpr::AO__atomic_compare_exchange_n) {
OS << ", ";
PrintExpr(Node->getWeak());
}
if (Node->getOp() != AtomicExpr::AO__c11_atomic_init) {
OS << ", ";
PrintExpr(Node->getOrder());
}
if (Node->isCmpXChg()) {
OS << ", ";
PrintExpr(Node->getOrderFail());
}
OS << ")";
}
// C++
void StmtPrinter::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *Node) {
const char *OpStrings[NUM_OVERLOADED_OPERATORS] = {
"",
#define OVERLOADED_OPERATOR(Name,Spelling,Token,Unary,Binary,MemberOnly) \
Spelling,
#include "clang/Basic/OperatorKinds.def"
};
OverloadedOperatorKind Kind = Node->getOperator();
if (Kind == OO_PlusPlus || Kind == OO_MinusMinus) {
if (Node->getNumArgs() == 1) {
OS << OpStrings[Kind] << ' ';
PrintExpr(Node->getArg(0));
} else {
PrintExpr(Node->getArg(0));
OS << ' ' << OpStrings[Kind];
}
} else if (Kind == OO_Arrow) {
PrintExpr(Node->getArg(0));
} else if (Kind == OO_Call) {
PrintExpr(Node->getArg(0));
OS << '(';
for (unsigned ArgIdx = 1; ArgIdx < Node->getNumArgs(); ++ArgIdx) {
if (ArgIdx > 1)
OS << ", ";
if (!isa<CXXDefaultArgExpr>(Node->getArg(ArgIdx)))
PrintExpr(Node->getArg(ArgIdx));
}
OS << ')';
} else if (Kind == OO_Subscript) {
PrintExpr(Node->getArg(0));
OS << '[';
PrintExpr(Node->getArg(1));
OS << ']';
} else if (Node->getNumArgs() == 1) {
OS << OpStrings[Kind] << ' ';
PrintExpr(Node->getArg(0));
} else if (Node->getNumArgs() == 2) {
PrintExpr(Node->getArg(0));
OS << ' ' << OpStrings[Kind] << ' ';
PrintExpr(Node->getArg(1));
} else {
llvm_unreachable("unknown overloaded operator");
}
}
void StmtPrinter::VisitCXXMemberCallExpr(CXXMemberCallExpr *Node) {
// If we have a conversion operator call only print the argument.
CXXMethodDecl *MD = Node->getMethodDecl();
if (MD && isa<CXXConversionDecl>(MD)) {
PrintExpr(Node->getImplicitObjectArgument());
return;
}
VisitCallExpr(cast<CallExpr>(Node));
}
void StmtPrinter::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *Node) {
PrintExpr(Node->getCallee());
OS << "<<<";
PrintCallArgs(Node->getConfig());
OS << ">>>(";
PrintCallArgs(Node);
OS << ")";
}
void StmtPrinter::VisitCXXNamedCastExpr(CXXNamedCastExpr *Node) {
OS << Node->getCastName() << '<';
Node->getTypeAsWritten().print(OS, Policy);
OS << ">(";
PrintExpr(Node->getSubExpr());
OS << ")";
}
void StmtPrinter::VisitCXXStaticCastExpr(CXXStaticCastExpr *Node) {
VisitCXXNamedCastExpr(Node);
}
void StmtPrinter::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *Node) {
VisitCXXNamedCastExpr(Node);
}
void StmtPrinter::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *Node) {
VisitCXXNamedCastExpr(Node);
}
void StmtPrinter::VisitCXXConstCastExpr(CXXConstCastExpr *Node) {
VisitCXXNamedCastExpr(Node);
}
void StmtPrinter::VisitCXXTypeidExpr(CXXTypeidExpr *Node) {
OS << "typeid(";
if (Node->isTypeOperand()) {
Node->getTypeOperandSourceInfo()->getType().print(OS, Policy);
} else {
PrintExpr(Node->getExprOperand());
}
OS << ")";
}
void StmtPrinter::VisitCXXUuidofExpr(CXXUuidofExpr *Node) {
OS << "__uuidof(";
if (Node->isTypeOperand()) {
Node->getTypeOperandSourceInfo()->getType().print(OS, Policy);
} else {
PrintExpr(Node->getExprOperand());
}
OS << ")";
}
void StmtPrinter::VisitMSPropertyRefExpr(MSPropertyRefExpr *Node) {
PrintExpr(Node->getBaseExpr());
if (Node->isArrow())
OS << "->";
else
OS << ".";
if (NestedNameSpecifier *Qualifier =
Node->getQualifierLoc().getNestedNameSpecifier())
Qualifier->print(OS, Policy);
OS << Node->getPropertyDecl()->getDeclName();
}
void StmtPrinter::VisitUserDefinedLiteral(UserDefinedLiteral *Node) {
switch (Node->getLiteralOperatorKind()) {
case UserDefinedLiteral::LOK_Raw:
OS << cast<StringLiteral>(Node->getArg(0)->IgnoreImpCasts())->getString();
break;
case UserDefinedLiteral::LOK_Template: {
DeclRefExpr *DRE = cast<DeclRefExpr>(Node->getCallee()->IgnoreImpCasts());
const TemplateArgumentList *Args =
cast<FunctionDecl>(DRE->getDecl())->getTemplateSpecializationArgs();
assert(Args);
const TemplateArgument &Pack = Args->get(0);
for (TemplateArgument::pack_iterator I = Pack.pack_begin(),
E = Pack.pack_end(); I != E; ++I) {
char C = (char)I->getAsIntegral().getZExtValue();
OS << C;
}
break;
}
case UserDefinedLiteral::LOK_Integer: {
// Print integer literal without suffix.
IntegerLiteral *Int = cast<IntegerLiteral>(Node->getCookedLiteral());
OS << Int->getValue().toString(10, /*isSigned*/false);
break;
}
case UserDefinedLiteral::LOK_Floating: {
// Print floating literal without suffix.
FloatingLiteral *Float = cast<FloatingLiteral>(Node->getCookedLiteral());
PrintFloatingLiteral(OS, Float, /*PrintSuffix=*/false);
break;
}
case UserDefinedLiteral::LOK_String:
case UserDefinedLiteral::LOK_Character:
PrintExpr(Node->getCookedLiteral());
break;
}
OS << Node->getUDSuffix()->getName();
}
void StmtPrinter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *Node) {
OS << (Node->getValue() ? "true" : "false");
}
void StmtPrinter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *Node) {
OS << "nullptr";
}
void StmtPrinter::VisitCXXThisExpr(CXXThisExpr *Node) {
OS << "this";
}
void StmtPrinter::VisitCXXThrowExpr(CXXThrowExpr *Node) {
if (Node->getSubExpr() == 0)
OS << "throw";
else {
OS << "throw ";
PrintExpr(Node->getSubExpr());
}
}
void StmtPrinter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *Node) {
// Nothing to print: we picked up the default argument.
}
void StmtPrinter::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *Node) {
// Nothing to print: we picked up the default initializer.
}
void StmtPrinter::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *Node) {
Node->getType().print(OS, Policy);
OS << "(";
PrintExpr(Node->getSubExpr());
OS << ")";
}
void StmtPrinter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *Node) {
PrintExpr(Node->getSubExpr());
}
void StmtPrinter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *Node) {
Node->getType().print(OS, Policy);
OS << "(";
for (CXXTemporaryObjectExpr::arg_iterator Arg = Node->arg_begin(),
ArgEnd = Node->arg_end();
Arg != ArgEnd; ++Arg) {
if (Arg->isDefaultArgument())
break;
if (Arg != Node->arg_begin())
OS << ", ";
PrintExpr(*Arg);
}
OS << ")";
}
void StmtPrinter::VisitLambdaExpr(LambdaExpr *Node) {
OS << '[';
bool NeedComma = false;
switch (Node->getCaptureDefault()) {
case LCD_None:
break;
case LCD_ByCopy:
OS << '=';
NeedComma = true;
break;
case LCD_ByRef:
OS << '&';
NeedComma = true;
break;
}
for (LambdaExpr::capture_iterator C = Node->explicit_capture_begin(),
CEnd = Node->explicit_capture_end();
C != CEnd;
++C) {
if (NeedComma)
OS << ", ";
NeedComma = true;
switch (C->getCaptureKind()) {
case LCK_This:
OS << "this";
break;
case LCK_ByRef:
if (Node->getCaptureDefault() != LCD_ByRef || C->isInitCapture())
OS << '&';
OS << C->getCapturedVar()->getName();
break;
case LCK_ByCopy:
OS << C->getCapturedVar()->getName();
break;
}
if (C->isInitCapture())
PrintExpr(C->getCapturedVar()->getInit());
}
OS << ']';
if (Node->hasExplicitParameters()) {
OS << " (";
CXXMethodDecl *Method = Node->getCallOperator();
NeedComma = false;
for (auto P : Method->params()) {
if (NeedComma) {
OS << ", ";
} else {
NeedComma = true;
}
std::string ParamStr = P->getNameAsString();
P->getOriginalType().print(OS, Policy, ParamStr);
}
if (Method->isVariadic()) {
if (NeedComma)
OS << ", ";
OS << "...";
}
OS << ')';
if (Node->isMutable())
OS << " mutable";
const FunctionProtoType *Proto
= Method->getType()->getAs<FunctionProtoType>();
Proto->printExceptionSpecification(OS, Policy);
// FIXME: Attributes
// Print the trailing return type if it was specified in the source.
if (Node->hasExplicitResultType()) {
OS << " -> ";
Proto->getReturnType().print(OS, Policy);
}
}
// Print the body.
CompoundStmt *Body = Node->getBody();
OS << ' ';
PrintStmt(Body);
}
void StmtPrinter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *Node) {
if (TypeSourceInfo *TSInfo = Node->getTypeSourceInfo())
TSInfo->getType().print(OS, Policy);
else
Node->getType().print(OS, Policy);
OS << "()";
}
void StmtPrinter::VisitCXXNewExpr(CXXNewExpr *E) {
if (E->isGlobalNew())
OS << "::";
OS << "new ";
unsigned NumPlace = E->getNumPlacementArgs();
if (NumPlace > 0 && !isa<CXXDefaultArgExpr>(E->getPlacementArg(0))) {
OS << "(";
PrintExpr(E->getPlacementArg(0));
for (unsigned i = 1; i < NumPlace; ++i) {
if (isa<CXXDefaultArgExpr>(E->getPlacementArg(i)))
break;
OS << ", ";
PrintExpr(E->getPlacementArg(i));
}
OS << ") ";
}
if (E->isParenTypeId())
OS << "(";
std::string TypeS;
if (Expr *Size = E->getArraySize()) {
llvm::raw_string_ostream s(TypeS);
s << '[';
Size->printPretty(s, Helper, Policy);
s << ']';
}
E->getAllocatedType().print(OS, Policy, TypeS);
if (E->isParenTypeId())
OS << ")";
CXXNewExpr::InitializationStyle InitStyle = E->getInitializationStyle();
if (InitStyle) {
if (InitStyle == CXXNewExpr::CallInit)
OS << "(";
PrintExpr(E->getInitializer());
if (InitStyle == CXXNewExpr::CallInit)
OS << ")";
}
}
void StmtPrinter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
if (E->isGlobalDelete())
OS << "::";
OS << "delete ";
if (E->isArrayForm())
OS << "[] ";
PrintExpr(E->getArgument());
}
void StmtPrinter::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
PrintExpr(E->getBase());
if (E->isArrow())
OS << "->";
else
OS << '.';
if (E->getQualifier())
E->getQualifier()->print(OS, Policy);
OS << "~";
if (IdentifierInfo *II = E->getDestroyedTypeIdentifier())
OS << II->getName();
else
E->getDestroyedType().print(OS, Policy);
}
void StmtPrinter::VisitCXXConstructExpr(CXXConstructExpr *E) {
if (E->isListInitialization())
OS << "{ ";
for (unsigned i = 0, e = E->getNumArgs(); i != e; ++i) {
if (isa<CXXDefaultArgExpr>(E->getArg(i))) {
// Don't print any defaulted arguments
break;
}
if (i) OS << ", ";
PrintExpr(E->getArg(i));
}
if (E->isListInitialization())
OS << " }";
}
void StmtPrinter::VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E) {
PrintExpr(E->getSubExpr());
}
void StmtPrinter::VisitExprWithCleanups(ExprWithCleanups *E) {
// Just forward to the subexpression.
PrintExpr(E->getSubExpr());
}
void
StmtPrinter::VisitCXXUnresolvedConstructExpr(
CXXUnresolvedConstructExpr *Node) {
Node->getTypeAsWritten().print(OS, Policy);
OS << "(";
for (CXXUnresolvedConstructExpr::arg_iterator Arg = Node->arg_begin(),
ArgEnd = Node->arg_end();
Arg != ArgEnd; ++Arg) {
if (Arg != Node->arg_begin())
OS << ", ";
PrintExpr(*Arg);
}
OS << ")";
}
void StmtPrinter::VisitCXXDependentScopeMemberExpr(
CXXDependentScopeMemberExpr *Node) {
if (!Node->isImplicitAccess()) {
PrintExpr(Node->getBase());
OS << (Node->isArrow() ? "->" : ".");
}
if (NestedNameSpecifier *Qualifier = Node->getQualifier())
Qualifier->print(OS, Policy);
if (Node->hasTemplateKeyword())
OS << "template ";
OS << Node->getMemberNameInfo();
if (Node->hasExplicitTemplateArgs())
TemplateSpecializationType::PrintTemplateArgumentList(
OS, Node->getTemplateArgs(), Node->getNumTemplateArgs(), Policy);
}
void StmtPrinter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *Node) {
if (!Node->isImplicitAccess()) {
PrintExpr(Node->getBase());
OS << (Node->isArrow() ? "->" : ".");
}
if (NestedNameSpecifier *Qualifier = Node->getQualifier())
Qualifier->print(OS, Policy);
if (Node->hasTemplateKeyword())
OS << "template ";
OS << Node->getMemberNameInfo();
if (Node->hasExplicitTemplateArgs())
TemplateSpecializationType::PrintTemplateArgumentList(
OS, Node->getTemplateArgs(), Node->getNumTemplateArgs(), Policy);
}
static const char *getTypeTraitName(TypeTrait TT) {
switch (TT) {
#define TYPE_TRAIT_1(Spelling, Name, Key) \
case clang::UTT_##Name: return #Spelling;
#define TYPE_TRAIT_2(Spelling, Name, Key) \
case clang::BTT_##Name: return #Spelling;
#define TYPE_TRAIT_N(Spelling, Name, Key) \
case clang::TT_##Name: return #Spelling;
#include "clang/Basic/TokenKinds.def"
}
llvm_unreachable("Type trait not covered by switch");
}
static const char *getTypeTraitName(ArrayTypeTrait ATT) {
switch (ATT) {
case ATT_ArrayRank: return "__array_rank";
case ATT_ArrayExtent: return "__array_extent";
}
llvm_unreachable("Array type trait not covered by switch");
}
static const char *getExpressionTraitName(ExpressionTrait ET) {
switch (ET) {
case ET_IsLValueExpr: return "__is_lvalue_expr";
case ET_IsRValueExpr: return "__is_rvalue_expr";
}
llvm_unreachable("Expression type trait not covered by switch");
}
void StmtPrinter::VisitTypeTraitExpr(TypeTraitExpr *E) {
OS << getTypeTraitName(E->getTrait()) << "(";
for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I) {
if (I > 0)
OS << ", ";
E->getArg(I)->getType().print(OS, Policy);
}
OS << ")";
}
void StmtPrinter::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
OS << getTypeTraitName(E->getTrait()) << '(';
E->getQueriedType().print(OS, Policy);
OS << ')';
}
void StmtPrinter::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
OS << getExpressionTraitName(E->getTrait()) << '(';
PrintExpr(E->getQueriedExpression());
OS << ')';
}
void StmtPrinter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
OS << "noexcept(";
PrintExpr(E->getOperand());
OS << ")";
}
void StmtPrinter::VisitPackExpansionExpr(PackExpansionExpr *E) {
PrintExpr(E->getPattern());
OS << "...";
}
void StmtPrinter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
OS << "sizeof...(" << *E->getPack() << ")";
}
void StmtPrinter::VisitSubstNonTypeTemplateParmPackExpr(
SubstNonTypeTemplateParmPackExpr *Node) {
OS << *Node->getParameterPack();
}
void StmtPrinter::VisitSubstNonTypeTemplateParmExpr(
SubstNonTypeTemplateParmExpr *Node) {
Visit(Node->getReplacement());
}
void StmtPrinter::VisitFunctionParmPackExpr(FunctionParmPackExpr *E) {
OS << *E->getParameterPack();
}
void StmtPrinter::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *Node){
PrintExpr(Node->GetTemporaryExpr());
}
// Obj-C
void StmtPrinter::VisitObjCStringLiteral(ObjCStringLiteral *Node) {
OS << "@";
VisitStringLiteral(Node->getString());
}
void StmtPrinter::VisitObjCBoxedExpr(ObjCBoxedExpr *E) {
OS << "@";
Visit(E->getSubExpr());
}
void StmtPrinter::VisitObjCArrayLiteral(ObjCArrayLiteral *E) {
OS << "@[ ";
StmtRange ch = E->children();
if (ch.first != ch.second) {
while (1) {
Visit(*ch.first);
++ch.first;
if (ch.first == ch.second) break;
OS << ", ";
}
}
OS << " ]";
}
void StmtPrinter::VisitObjCDictionaryLiteral(ObjCDictionaryLiteral *E) {
OS << "@{ ";
for (unsigned I = 0, N = E->getNumElements(); I != N; ++I) {
if (I > 0)
OS << ", ";
ObjCDictionaryElement Element = E->getKeyValueElement(I);
Visit(Element.Key);
OS << " : ";
Visit(Element.Value);
if (Element.isPackExpansion())
OS << "...";
}
OS << " }";
}
void StmtPrinter::VisitObjCEncodeExpr(ObjCEncodeExpr *Node) {
OS << "@encode(";
Node->getEncodedType().print(OS, Policy);
OS << ')';
}
void StmtPrinter::VisitObjCSelectorExpr(ObjCSelectorExpr *Node) {
OS << "@selector(";
Node->getSelector().print(OS);
OS << ')';
}
void StmtPrinter::VisitObjCProtocolExpr(ObjCProtocolExpr *Node) {
OS << "@protocol(" << *Node->getProtocol() << ')';
}
void StmtPrinter::VisitObjCMessageExpr(ObjCMessageExpr *Mess) {
OS << "[";
switch (Mess->getReceiverKind()) {
case ObjCMessageExpr::Instance:
PrintExpr(Mess->getInstanceReceiver());
break;
case ObjCMessageExpr::Class:
Mess->getClassReceiver().print(OS, Policy);
break;
case ObjCMessageExpr::SuperInstance:
case ObjCMessageExpr::SuperClass:
OS << "Super";
break;
}
OS << ' ';
Selector selector = Mess->getSelector();
if (selector.isUnarySelector()) {
OS << selector.getNameForSlot(0);
} else {
for (unsigned i = 0, e = Mess->getNumArgs(); i != e; ++i) {
if (i < selector.getNumArgs()) {
if (i > 0) OS << ' ';
if (selector.getIdentifierInfoForSlot(i))
OS << selector.getIdentifierInfoForSlot(i)->getName() << ':';
else
OS << ":";
}
else OS << ", "; // Handle variadic methods.
PrintExpr(Mess->getArg(i));
}
}
OS << "]";
}
void StmtPrinter::VisitObjCBoolLiteralExpr(ObjCBoolLiteralExpr *Node) {
OS << (Node->getValue() ? "__objc_yes" : "__objc_no");
}
void
StmtPrinter::VisitObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) {
PrintExpr(E->getSubExpr());
}
void
StmtPrinter::VisitObjCBridgedCastExpr(ObjCBridgedCastExpr *E) {
OS << '(' << E->getBridgeKindName();
E->getType().print(OS, Policy);
OS << ')';
PrintExpr(E->getSubExpr());
}
void StmtPrinter::VisitBlockExpr(BlockExpr *Node) {
BlockDecl *BD = Node->getBlockDecl();
OS << "^";
const FunctionType *AFT = Node->getFunctionType();
if (isa<FunctionNoProtoType>(AFT)) {
OS << "()";
} else if (!BD->param_empty() || cast<FunctionProtoType>(AFT)->isVariadic()) {
OS << '(';
for (BlockDecl::param_iterator AI = BD->param_begin(),
E = BD->param_end(); AI != E; ++AI) {
if (AI != BD->param_begin()) OS << ", ";
std::string ParamStr = (*AI)->getNameAsString();
(*AI)->getType().print(OS, Policy, ParamStr);
}
const FunctionProtoType *FT = cast<FunctionProtoType>(AFT);
if (FT->isVariadic()) {
if (!BD->param_empty()) OS << ", ";
OS << "...";
}
OS << ')';
}
OS << "{ }";
}
void StmtPrinter::VisitOpaqueValueExpr(OpaqueValueExpr *Node) {
PrintExpr(Node->getSourceExpr());
}
void StmtPrinter::VisitAsTypeExpr(AsTypeExpr *Node) {
OS << "__builtin_astype(";
PrintExpr(Node->getSrcExpr());
OS << ", ";
Node->getType().print(OS, Policy);
OS << ")";
}
//===----------------------------------------------------------------------===//
// Stmt method implementations
//===----------------------------------------------------------------------===//
void Stmt::dumpPretty(const ASTContext &Context) const {
printPretty(llvm::errs(), 0, PrintingPolicy(Context.getLangOpts()));
}
void Stmt::printPretty(raw_ostream &OS,
PrinterHelper *Helper,
const PrintingPolicy &Policy,
unsigned Indentation) const {
if (this == 0) {
OS << "<NULL>";
return;
}
StmtPrinter P(OS, Helper, Policy, Indentation);
P.Visit(const_cast<Stmt*>(this));
}
//===----------------------------------------------------------------------===//
// PrinterHelper
//===----------------------------------------------------------------------===//
// Implement virtual destructor.
PrinterHelper::~PrinterHelper() {}
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