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-rw-r--r--clang/AST/StmtDumper.cpp562
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diff --git a/clang/AST/StmtDumper.cpp b/clang/AST/StmtDumper.cpp
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+//===--- StmtDumper.cpp - Dumping implementation for Stmt ASTs ------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by Chris Lattner and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Stmt::dump/Stmt::print methods, which dump out the
+// AST in a form that exposes type details and other fields.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/AST/StmtVisitor.h"
+#include "clang/AST/Decl.h"
+#include "clang/AST/ExprCXX.h"
+#include "clang/Lex/IdentifierTable.h"
+#include "llvm/Support/Compiler.h"
+#include <cstdio>
+using namespace clang;
+
+//===----------------------------------------------------------------------===//
+// StmtDumper Visitor
+//===----------------------------------------------------------------------===//
+
+namespace {
+ class VISIBILITY_HIDDEN StmtDumper : public StmtVisitor {
+ FILE *F;
+ unsigned IndentLevel;
+
+ /// MaxDepth - When doing a normal dump (not dumpAll) we only want to dump
+ /// the first few levels of an AST. This keeps track of how many ast levels
+ /// are left.
+ unsigned MaxDepth;
+ public:
+ StmtDumper(FILE *f, unsigned maxDepth)
+ : F(f), IndentLevel(0), MaxDepth(maxDepth) {}
+
+ void DumpSubTree(Stmt *S, int SubIndent = 1) {
+ // Prune the recursion if not using dump all.
+ if (MaxDepth == 0) return;
+
+ IndentLevel += SubIndent;
+ if (S) {
+ S->visit(*this);
+ } else {
+ Indent();
+ fprintf(F, "<<<NULL>>>\n");
+ }
+ IndentLevel -= SubIndent;
+ }
+
+ void PrintRawDecl(Decl *D);
+
+ void Indent() const {
+ for (int i = 0, e = IndentLevel; i < e; ++i)
+ fprintf(F, " ");
+ }
+
+ void DumpStmt(const Stmt *Node) const {
+ Indent();
+ fprintf(F, "(%s %p", Node->getStmtClassName(), (void*)Node);
+ }
+
+ void DumpExpr(Expr *Node) const {
+ DumpStmt(Node);
+ // TODO: DUMP TYPE
+ }
+
+ virtual void VisitStmt(Stmt *Node);
+#define STMT(N, CLASS, PARENT) \
+ virtual void Visit##CLASS(CLASS *Node);
+#include "clang/AST/StmtNodes.def"
+ };
+}
+
+//===----------------------------------------------------------------------===//
+// Stmt printing methods.
+//===----------------------------------------------------------------------===//
+
+void StmtDumper::VisitStmt(Stmt *Node) {
+ Indent();
+ fprintf(F, "<<unknown stmt type>>\n");
+}
+
+void StmtDumper::PrintRawDecl(Decl *D) {
+#if 0
+ // FIXME: Need to complete/beautify this... this code simply shows the
+ // nodes are where they need to be.
+ if (TypedefDecl *localType = dyn_cast<TypedefDecl>(D)) {
+ OS << "typedef " << localType->getUnderlyingType().getAsString();
+ OS << " " << localType->getName();
+ } else if (ValueDecl *VD = dyn_cast<ValueDecl>(D)) {
+ // Emit storage class for vardecls.
+ if (VarDecl *V = dyn_cast<VarDecl>(VD)) {
+ switch (V->getStorageClass()) {
+ default: assert(0 && "Unknown storage class!");
+ case VarDecl::None: break;
+ case VarDecl::Extern: OS << "extern "; break;
+ case VarDecl::Static: OS << "static "; break;
+ case VarDecl::Auto: OS << "auto "; break;
+ case VarDecl::Register: OS << "register "; break;
+ }
+ }
+
+ std::string Name = VD->getName();
+ VD->getType().getAsStringInternal(Name);
+ OS << Name;
+
+ // If this is a vardecl with an initializer, emit it.
+ if (VarDecl *V = dyn_cast<VarDecl>(VD)) {
+ if (V->getInit()) {
+ OS << " = ";
+ DumpExpr(V->getInit());
+ }
+ }
+ } else {
+ // FIXME: "struct x;"
+ assert(0 && "Unexpected decl");
+ }
+#endif
+}
+
+
+void StmtDumper::VisitNullStmt(NullStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitDeclStmt(DeclStmt *Node) {
+ DumpStmt(Node);
+ // FIXME: implement this better :)
+ fprintf(F, ")");
+#if 0
+ for (Decl *D = Node->getDecl(); D; D = D->getNextDeclarator()) {
+ Indent();
+ PrintRawDecl(D);
+ OS << ";\n";
+ }
+#endif
+}
+
+void StmtDumper::VisitCompoundStmt(CompoundStmt *Node) {
+ DumpStmt(Node);
+ if (!Node->body_empty()) fprintf(F, "\n");
+
+ for (CompoundStmt::body_iterator I = Node->body_begin(), E = Node->body_end();
+ I != E; ) {
+ DumpSubTree(*I);
+ ++I;
+ if (I != E)
+ fprintf(F, "\n");
+ }
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitCaseStmt(CaseStmt *Node) {
+#if 0
+ Indent(-1) << "case ";
+ DumpExpr(Node->getLHS());
+ if (Node->getRHS()) {
+ OS << " ... ";
+ DumpExpr(Node->getRHS());
+ }
+ OS << ":\n";
+
+ DumpSubTree(Node->getSubStmt(), 0);
+#endif
+}
+
+void StmtDumper::VisitDefaultStmt(DefaultStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getSubStmt());
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitLabelStmt(LabelStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, " '%s'\n", Node->getName());
+ DumpSubTree(Node->getSubStmt());
+ fprintf(F, "\n");
+}
+
+void StmtDumper::VisitIfStmt(IfStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getCond());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getThen());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getElse());
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitSwitchStmt(SwitchStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getCond());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getBody());
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitSwitchCase(SwitchCase*) {
+ assert(0 && "SwitchCase is an abstract class");
+}
+
+void StmtDumper::VisitWhileStmt(WhileStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getCond());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getBody());
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitDoStmt(DoStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getBody());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getCond());
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitForStmt(ForStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getInit());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getCond());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getInc());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getBody());
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitGotoStmt(GotoStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, " '%s':%p)", Node->getLabel()->getName(), (void*)Node->getLabel());
+}
+
+void StmtDumper::VisitIndirectGotoStmt(IndirectGotoStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getTarget());
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitContinueStmt(ContinueStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitBreakStmt(BreakStmt *Node) {
+ DumpStmt(Node);
+ fprintf(F, ")");
+}
+
+
+void StmtDumper::VisitReturnStmt(ReturnStmt *Node) {
+ DumpStmt(Node);
+ if (Expr *RV = Node->getRetValue()) {
+ fprintf(F, "\n");
+ DumpSubTree(RV);
+ }
+ fprintf(F, ")");
+}
+
+//===----------------------------------------------------------------------===//
+// Expr printing methods.
+//===----------------------------------------------------------------------===//
+
+void StmtDumper::VisitExpr(Expr *Node) {
+ DumpExpr(Node);
+ fprintf(F, ": UNKNOWN EXPR to StmtDumper)");
+}
+
+void StmtDumper::VisitDeclRefExpr(DeclRefExpr *Node) {
+ DumpExpr(Node);
+ fprintf(F, " Decl='%s' %p)", Node->getDecl()->getName(),
+ (void*)Node->getDecl());
+}
+
+void StmtDumper::VisitPreDefinedExpr(PreDefinedExpr *Node) {
+ DumpExpr(Node);
+ switch (Node->getIdentType()) {
+ default:
+ assert(0 && "unknown case");
+ case PreDefinedExpr::Func:
+ fprintf(F, " __func__)");
+ break;
+ case PreDefinedExpr::Function:
+ fprintf(F, " __FUNCTION__)");
+ break;
+ case PreDefinedExpr::PrettyFunction:
+ fprintf(F, " __PRETTY_FUNCTION__)");
+ break;
+ }
+}
+
+void StmtDumper::VisitCharacterLiteral(CharacterLiteral *Node) {
+#if 0
+ // FIXME should print an L for wchar_t constants
+ unsigned value = Node->getValue();
+ 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 (isprint(value) && value < 256) {
+ OS << "'" << (char)value << "'";
+ } else if (value < 256) {
+ OS << "'\\x" << std::hex << value << std::dec << "'";
+ } else {
+ // FIXME what to really do here?
+ OS << value;
+ }
+ }
+#endif
+}
+
+void StmtDumper::VisitIntegerLiteral(IntegerLiteral *Node) {
+ DumpExpr(Node);
+
+ bool isSigned = Node->getType()->isSignedIntegerType();
+ fprintf(F, " %s)", Node->getValue().toString(10, isSigned).c_str());
+}
+void StmtDumper::VisitFloatingLiteral(FloatingLiteral *Node) {
+ DumpExpr(Node);
+ fprintf(F, " %f)", Node->getValue());
+}
+void StmtDumper::VisitStringLiteral(StringLiteral *Str) {
+#if 0
+ if (Str->isWide()) OS << 'L';
+ OS << '"';
+
+ // FIXME: this doesn't print wstrings right.
+ for (unsigned i = 0, e = Str->getByteLength(); i != e; ++i) {
+ switch (Str->getStrData()[i]) {
+ default: OS << Str->getStrData()[i]; break;
+ // Handle some common ones to make dumps prettier.
+ case '\\': OS << "\\\\"; break;
+ case '"': OS << "\\\""; break;
+ case '\n': OS << "\\n"; break;
+ case '\t': OS << "\\t"; break;
+ case '\a': OS << "\\a"; break;
+ case '\b': OS << "\\b"; break;
+ }
+ }
+ OS << '"';
+#endif
+}
+void StmtDumper::VisitParenExpr(ParenExpr *Node) {
+ DumpExpr(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getSubExpr());
+ fprintf(F, ")");
+}
+void StmtDumper::VisitUnaryOperator(UnaryOperator *Node) {
+#if 0
+ if (!Node->isPostfix())
+ OS << UnaryOperator::getOpcodeStr(Node->getOpcode());
+ DumpExpr(Node->getSubExpr());
+
+ if (Node->isPostfix())
+ OS << UnaryOperator::getOpcodeStr(Node->getOpcode());
+
+#endif
+}
+void StmtDumper::VisitSizeOfAlignOfTypeExpr(SizeOfAlignOfTypeExpr *Node) {
+#if 0
+ OS << (Node->isSizeOf() ? "sizeof(" : "__alignof(");
+ OS << Node->getArgumentType().getAsString() << ")";
+#endif
+}
+void StmtDumper::VisitArraySubscriptExpr(ArraySubscriptExpr *Node) {
+ DumpExpr(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getBase());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getIdx());
+ fprintf(F, ")");
+}
+
+void StmtDumper::VisitCallExpr(CallExpr *Node) {
+ DumpExpr(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getCallee());
+
+ for (unsigned i = 0, e = Node->getNumArgs(); i != e; ++i) {
+ fprintf(F, "\n");
+ DumpSubTree(Node->getArg(i));
+ }
+ fprintf(F, ")");
+}
+void StmtDumper::VisitMemberExpr(MemberExpr *Node) {
+#if 0
+ DumpExpr(Node->getBase());
+ OS << (Node->isArrow() ? "->" : ".");
+
+ FieldDecl *Field = Node->getMemberDecl();
+ assert(Field && "MemberExpr should alway reference a field!");
+ OS << Field->getName();
+#endif
+}
+void StmtDumper::VisitOCUVectorElementExpr(OCUVectorElementExpr *Node) {
+#if 0
+ DumpExpr(Node->getBase());
+ OS << ".";
+ OS << Node->getAccessor().getName();
+#endif
+}
+void StmtDumper::VisitCastExpr(CastExpr *Node) {
+#if 0
+ OS << "(" << Node->getType().getAsString() << ")";
+ DumpExpr(Node->getSubExpr());
+#endif
+}
+void StmtDumper::VisitCompoundLiteralExpr(CompoundLiteralExpr *Node) {
+#if 0
+ OS << "(" << Node->getType().getAsString() << ")";
+ DumpExpr(Node->getInitializer());
+#endif
+}
+void StmtDumper::VisitImplicitCastExpr(ImplicitCastExpr *Node) {
+ DumpExpr(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getSubExpr());
+ fprintf(F, ")");
+}
+void StmtDumper::VisitBinaryOperator(BinaryOperator *Node) {
+ DumpExpr(Node);
+ fprintf(F, " '%s'\n", BinaryOperator::getOpcodeStr(Node->getOpcode()));
+ DumpSubTree(Node->getLHS());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getRHS());
+ fprintf(F, ")");
+}
+void StmtDumper::VisitConditionalOperator(ConditionalOperator *Node) {
+ DumpExpr(Node);
+ fprintf(F, "\n");
+ DumpSubTree(Node->getCond());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getLHS());
+ fprintf(F, "\n");
+ DumpSubTree(Node->getRHS());
+ fprintf(F, ")");
+}
+
+// GNU extensions.
+
+void StmtDumper::VisitAddrLabelExpr(AddrLabelExpr *Node) {
+#if 0
+ OS << "&&" << Node->getLabel()->getName();
+#endif
+}
+
+void StmtDumper::VisitStmtExpr(StmtExpr *E) {
+#if 0
+ OS << "(";
+ DumpSubTree(E->getSubStmt());
+ OS << ")";
+#endif
+}
+
+void StmtDumper::VisitTypesCompatibleExpr(TypesCompatibleExpr *Node) {
+#if 0
+ OS << "__builtin_types_compatible_p(";
+ OS << Node->getArgType1().getAsString() << ",";
+ OS << Node->getArgType2().getAsString() << ")";
+#endif
+}
+
+void StmtDumper::VisitChooseExpr(ChooseExpr *Node) {
+#if 0
+ OS << "__builtin_choose_expr(";
+ DumpExpr(Node->getCond());
+ OS << ", ";
+ DumpExpr(Node->getLHS());
+ OS << ", ";
+ DumpExpr(Node->getRHS());
+ OS << ")";
+#endif
+}
+
+// C++
+
+void StmtDumper::VisitCXXCastExpr(CXXCastExpr *Node) {
+#if 0
+ switch (Node->getOpcode()) {
+ default:
+ assert(0 && "Not a C++ cast expression");
+ abort();
+ case CXXCastExpr::ConstCast: OS << "const_cast<"; break;
+ case CXXCastExpr::DynamicCast: OS << "dynamic_cast<"; break;
+ case CXXCastExpr::ReinterpretCast: OS << "reinterpret_cast<"; break;
+ case CXXCastExpr::StaticCast: OS << "static_cast<"; break;
+ }
+
+ OS << Node->getDestType().getAsString() << ">(";
+ DumpExpr(Node->getSubExpr());
+ OS << ")";
+#endif
+}
+
+void StmtDumper::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *Node) {
+#if 0
+ OS << (Node->getValue() ? "true" : "false");
+#endif
+}
+
+
+//===----------------------------------------------------------------------===//
+// Stmt method implementations
+//===----------------------------------------------------------------------===//
+
+/// dump - This does a local dump of the specified AST fragment. It dumps the
+/// specified node and a few nodes underneath it, but not the whole subtree.
+/// This is useful in a debugger.
+void Stmt::dump() const {
+ StmtDumper P(stderr, 4);
+ const_cast<Stmt*>(this)->visit(P);
+}
+
+/// dumpAll - This does a dump of the specified AST fragment and all subtrees.
+void Stmt::dumpAll() const {
+ StmtDumper P(stderr, ~0U);
+ const_cast<Stmt*>(this)->visit(P);
+}
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