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TemplightDebugger.cpp
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TemplightDebugger.cpp
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//===- TemplightDebugger.cpp ------ Clang Templight Debugger -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "TemplightDebugger.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclLookups.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/Sema/ActiveTemplateInst.h"
#include "clang/Sema/Sema.h"
#include "clang/Lex/Lexer.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Regex.h"
#include <string>
#include <vector>
#include <algorithm>
#include <cctype>
#include <cstdio>
#include <cstring>
namespace clang {
namespace {
const char* const InstantiationKindStrings[] = {
"template instantiation",
"default template-argument instantiation",
"default function-argument instantiation",
"explicit template-argument substitution",
"deduced template-argument substitution",
"prior template-argument substitution",
"default template-argument checking",
"exception specification instantiation",
"memoization" };
struct TemplateDebuggerEntry {
bool IsTemplateBegin;
ActiveTemplateInstantiation Inst;
std::string Name;
std::string FileName;
int Line;
int Column;
std::size_t MemoryUsage;
TemplateDebuggerEntry() : IsTemplateBegin(true),
Inst(), Name(), FileName(), Line(0), Column(0),
MemoryUsage(0) { };
TemplateDebuggerEntry(bool aIsBegin, std::size_t aMemUsage,
const Sema &TheSema,
const ActiveTemplateInstantiation& aInst) :
IsTemplateBegin(aIsBegin), Inst(aInst), Name(),
FileName(), Line(0), Column(0), MemoryUsage(aMemUsage) {
NamedDecl *NamedTemplate = dyn_cast_or_null<NamedDecl>(Inst.Entity);
if (NamedTemplate) {
llvm::raw_string_ostream OS(Name);
NamedTemplate->getNameForDiagnostic(OS, TheSema.getLangOpts(), true);
}
PresumedLoc Loc = TheSema.getSourceManager().getPresumedLoc(Inst.PointOfInstantiation);
if(!Loc.isInvalid()) {
FileName = Loc.getFilename();
Line = Loc.getLine();
Column = Loc.getColumn();
};
};
};
static std::string getSrcPointer(const Sema& TheSema, SourceLocation SLoc) {
PresumedLoc PLoc = TheSema.getSourceManager().getPresumedLoc(SLoc);
FileID fid = TheSema.getSourceManager().getFileID(SLoc);
std::string SrcPointer = Lexer::getSourceText(
CharSourceRange::getTokenRange(
TheSema.getSourceManager().translateLineCol(fid, PLoc.getLine(), 1),
TheSema.getSourceManager().translateLineCol(fid, PLoc.getLine(), 256)
), TheSema.getSourceManager(), TheSema.getLangOpts()).str();
SrcPointer.push_back('\n');
SrcPointer.append(PLoc.getColumn()-1, ' ');
SrcPointer.push_back('^');
return SrcPointer;
}
template <typename OutputIter>
void fillWithTemplateArgumentPrints(const TemplateArgument *Args,
unsigned NumArgs,
const PrintingPolicy &Policy,
OutputIter It) {
for (unsigned Arg = 0; Arg < NumArgs; ++Arg) {
// Print the argument into a string.
if (Args[Arg].getKind() == TemplateArgument::Pack) {
fillWithTemplateArgumentPrints(Args[Arg].pack_begin(),
Args[Arg].pack_size(),
Policy, It);
} else {
std::string Buf;
llvm::raw_string_ostream ArgOS(Buf);
Args[Arg].print(Policy, ArgOS);
*(It++) = Buf;
}
}
}
class TemplateArgRecorder : public RecursiveASTVisitor<TemplateArgRecorder> {
public:
typedef RecursiveASTVisitor<TemplateArgRecorder> Base;
const Sema &TheSema;
bool shouldVisitTemplateInstantiations() const { return false; }
struct PrintableQueryResult {
std::string Name;
std::string FileName;
int Line;
int Column;
std::string SrcPointer;
PrintableQueryResult() : Name(""), FileName("<no-file>"), Line(0), Column(0), SrcPointer("") { }
void nullLocation(const std::string& NullName = "<no-file>") {
FileName = NullName;
Line = 0;
Column = 0;
SrcPointer = "";
}
void fromLocation(const Sema &TheSema, SourceLocation SLoc, const std::string& NullName = "") {
PresumedLoc PLoc = TheSema.getSourceManager().getPresumedLoc(SLoc);
if(!PLoc.isInvalid()) {
FileName = PLoc.getFilename();
Line = PLoc.getLine();
Column = PLoc.getColumn();
FileID fid = TheSema.getSourceManager().getFileID(SLoc);
SrcPointer = Lexer::getSourceText(
CharSourceRange::getTokenRange(
TheSema.getSourceManager().translateLineCol(fid, PLoc.getLine(), 1),
TheSema.getSourceManager().translateLineCol(fid, PLoc.getLine(), 256)
), TheSema.getSourceManager(), TheSema.getLangOpts()).str();
SrcPointer.push_back('\n');
SrcPointer.append(PLoc.getColumn()-1, ' ');
SrcPointer.push_back('^');
} else {
FileName = NullName;
Line = 0;
Column = 0;
SrcPointer = "";
}
}
};
llvm::Regex QueryReg;
enum LookupKind {
LookForDecl = 1,
LookForType = 2,
LookForValue = 4
};
int QueryKind;
std::vector< PrintableQueryResult > QueryResults;
// MAYBE change (or add) with Decl* or QualType, etc..
TemplateArgRecorder(const Sema &aSema, const std::string& aReg, int aKind = LookForDecl) :
TheSema(aSema), QueryReg(aReg), QueryKind(aKind) { }
void RegisterQualTypeQueryResult(PrintableQueryResult& cur_result, QualType q_type) {
if( QueryKind & LookForType )
q_type = q_type.getCanonicalType();
cur_result.Name += q_type.getAsString(TheSema.getLangOpts());
if( cur_result.Line < 1 ) {
SourceLocation sl;
if(const Type* tp = q_type.getTypePtr()) {
if(const CXXRecordDecl* cxx_decl = tp->getAsCXXRecordDecl()) {
sl = cxx_decl->getLocation();
}
}
cur_result.fromLocation(TheSema, sl, "<unknown-location>");
}
};
void LookupInParamArgLists(const TemplateParameterList *Params,
const TemplateArgument *Args, unsigned NumArgs) {
for (unsigned I = 0, N = Params->size(); I != N; ++I) {
if (I >= NumArgs)
break;
std::string param_name;
if (const IdentifierInfo *Id = Params->getParam(I)->getIdentifier()) {
param_name = Id->getName();
} else {
llvm::raw_string_ostream OS_param(param_name);
OS_param << '$' << I;
OS_param.str();
}
if(QueryReg.match(param_name)) {
PrintableQueryResult cur_result;
if( QueryKind & LookForDecl ) {
cur_result.Name = Params->getParam(I)->getName();
cur_result.fromLocation(TheSema, Params->getParam(I)->getLocation(), "<unknown-location>");
}
if( QueryKind != LookForDecl ) { // not (only) look-for-decl
switch (Args[I].getKind()) {
case TemplateArgument::Null: {
// not much better to do.
if( !cur_result.Name.empty() )
cur_result.Name += " with value ";
cur_result.Name += "<empty>";
llvm::raw_string_ostream OS_arg(cur_result.Name);
Args[I].print(TheSema.getPrintingPolicy(), OS_arg);
OS_arg.str(); // flush to string.
break;
}
case TemplateArgument::Integral: {
if( QueryKind & LookForValue ) {
if( !cur_result.Name.empty() )
cur_result.Name += " with value ";
cur_result.Name += Args[I].getAsIntegral().toString(10);
}
if( QueryKind & LookForType ) {
if( !cur_result.Name.empty() )
cur_result.Name += " of type ";
RegisterQualTypeQueryResult(cur_result, Args[I].getIntegralType());
}
break;
}
case TemplateArgument::NullPtr: {
if( QueryKind & LookForValue ) {
if( !cur_result.Name.empty() )
cur_result.Name += " with value ";
cur_result.Name += "nullptr";
}
if( QueryKind & LookForType ) {
if( !cur_result.Name.empty() )
cur_result.Name += " of type ";
cur_result.Name += Args[I].getNullPtrType().getAsString(TheSema.getLangOpts());
}
break;
}
case TemplateArgument::Declaration: {
ValueDecl* vdecl = Args[I].getAsDecl();
if( QueryKind & LookForValue ) {
// Attempt to print out the constant-expression value of the declaration:
// the meaningful ValueDecl would be NonTypeTemplateParmDecl, VarDecl, EnumConstantDecl, and maybe FunctionDecl
if( !cur_result.Name.empty() )
cur_result.Name += " with value ";
if( VarDecl* vardecl = dyn_cast<VarDecl>(vdecl) ) {
if( APValue* valptr = vardecl->evaluateValue() ) {
llvm::raw_string_ostream OS_arg(cur_result.Name);
valptr->printPretty(OS_arg, TheSema.getASTContext(), vdecl->getType());
OS_arg.str(); // flush to string.
} else {
cur_result.Name = "<could not evaluate>";
}
} else {
llvm::raw_string_ostream OS_arg(cur_result.Name);
vdecl->getNameForDiagnostic(OS_arg, TheSema.getLangOpts(), true);
OS_arg.str(); // flush to string.
if( cur_result.Line < 1 )
cur_result.fromLocation(TheSema, vdecl->getLocation(), "<unknown-location>");
}
}
if( QueryKind & LookForType ) {
if( !cur_result.Name.empty() )
cur_result.Name += " of type ";
RegisterQualTypeQueryResult(cur_result, vdecl->getType());
}
break;
}
case TemplateArgument::Type: {
if( !cur_result.Name.empty() )
cur_result.Name += " standing for ";
RegisterQualTypeQueryResult(cur_result, Args[I].getAsType());
break;
}
case TemplateArgument::Template:
case TemplateArgument::TemplateExpansion: {
if( !cur_result.Name.empty() )
cur_result.Name += " standing for ";
llvm::raw_string_ostream OS_arg(cur_result.Name);
TemplateName tname = Args[I].getAsTemplateOrTemplatePattern();
tname.print(OS_arg, TheSema.getLangOpts());
OS_arg.str(); // flush to string.
SourceLocation sl;
if(TemplateDecl* tmp_decl = tname.getAsTemplateDecl()) {
sl = tmp_decl->getLocation();
}
if( cur_result.Line < 1 )
cur_result.fromLocation(TheSema, sl, "<unknown-location>");
break;
}
case TemplateArgument::Expression: {
if( QueryKind & LookForValue ) {
// Evaluate the expression to get the value printed.
if( !cur_result.Name.empty() )
cur_result.Name += " with value ";
llvm::raw_string_ostream OS_arg(cur_result.Name);
Args[I].getAsExpr()->printPretty(OS_arg, NULL, TheSema.getLangOpts());
Expr::EvalResult expr_res;
if( Args[I].getAsExpr()->EvaluateAsRValue(expr_res, TheSema.getASTContext()) ) {
OS_arg << " == ";
expr_res.Val.printPretty(OS_arg, TheSema.getASTContext(), Args[I].getAsExpr()->getType());
} else {
OS_arg << " == <could not evaluate>";
}
OS_arg.str(); // flush to string.
if( cur_result.Line < 1 )
cur_result.fromLocation(
TheSema, Args[I].getAsExpr()->getExprLoc(), "<unknown-location>");
}
if( QueryKind & LookForType ) {
if( !cur_result.Name.empty() )
cur_result.Name += " of type ";
RegisterQualTypeQueryResult(cur_result, Args[I].getAsExpr()->getType());
}
break;
}
case TemplateArgument::Pack: {
// not much better to do.
if( !cur_result.Name.empty() )
cur_result.Name += " standing for ";
llvm::raw_string_ostream OS_arg(cur_result.Name);
Args[I].print(TheSema.getPrintingPolicy(), OS_arg);
OS_arg.str(); // flush to string.
break;
}
}
}
QueryResults.push_back(cur_result);
return;
}
}
}
void LookupInDeclContext(DeclContext* decl, bool shouldGoUp = false) {
DeclContext* cur_decl = decl;
while(cur_decl) {
for(DeclContext::all_lookups_iterator it = cur_decl->lookups_begin(),
it_end = cur_decl->lookups_end(); it != it_end; ++it) {
if(QueryReg.match(it.getLookupName().getAsString())) {
for(DeclContext::lookup_result::iterator ri = (*it).begin(),
ri_end = (*it).end(); ri != ri_end; ++ri) {
NamedDecl* ndecl = *ri;
if(!ndecl)
continue;
PrintableQueryResult cur_result;
if( QueryKind & LookForDecl ) {
llvm::raw_string_ostream OS_arg(cur_result.Name);
ndecl->getNameForDiagnostic(OS_arg, TheSema.getLangOpts(), true);
OS_arg.str(); // flush to string.
cur_result.fromLocation(TheSema, ndecl->getLocation(), "<unknown-location>");
}
if( QueryKind != LookForDecl ) { // if not (only) look-for-decl
if(TypeDecl* tdecl = dyn_cast<TypeDecl>(ndecl)) {
if(TypedefNameDecl* utp = dyn_cast<TypedefNameDecl>(tdecl)) {
if( !cur_result.Name.empty() )
cur_result.Name += " alias for ";
RegisterQualTypeQueryResult(cur_result, utp->getUnderlyingType());
} else if(const Type* tp = tdecl->getTypeForDecl()) {
if( !cur_result.Name.empty() )
cur_result.Name += " standing for ";
RegisterQualTypeQueryResult(cur_result, tp->getCanonicalTypeInternal());
}
} else
if(ValueDecl* vdecl = dyn_cast<ValueDecl>(ndecl)) {
if( QueryKind & LookForValue ) {
// Attempt to print out the constant-expression value of the declaration:
// the meaningful ValueDecl would be NonTypeTemplateParmDecl, VarDecl, EnumConstantDecl, and maybe FunctionDecl
if( !cur_result.Name.empty() )
cur_result.Name += " with value ";
if( VarDecl* vardecl = dyn_cast<VarDecl>(vdecl) ) {
if( APValue* valptr = vardecl->evaluateValue() ) {
llvm::raw_string_ostream OS_arg(cur_result.Name);
valptr->printPretty(OS_arg, TheSema.getASTContext(), vdecl->getType());
OS_arg.str(); // flush to string.
} else {
cur_result.Name = "<could not evaluate>";
}
} else {
llvm::raw_string_ostream OS_arg(cur_result.Name);
vdecl->getNameForDiagnostic(OS_arg, TheSema.getLangOpts(), true);
OS_arg.str(); // flush to string.
if( cur_result.Line < 1 )
cur_result.fromLocation(TheSema, vdecl->getLocation(), "<unknown-location>");
}
}
if( QueryKind & LookForType ) {
if( !cur_result.Name.empty() )
cur_result.Name += " of type ";
RegisterQualTypeQueryResult(cur_result, vdecl->getType());
}
}
}
QueryResults.push_back(cur_result);
}
return;
}
}
if(shouldGoUp) {
cur_decl = cur_decl->getParent(); // recurse
} else
return;
}
}
bool TraverseActiveTempInstantiation(const ActiveTemplateInstantiation& Inst) {
TemplateDecl *TemplatePtr = dyn_cast_or_null<TemplateDecl>(Inst.Entity);
if( TemplatePtr && TemplatePtr->getTemplateParameters() &&
( TemplatePtr->getTemplateParameters()->size() != 0 ) &&
( Inst.NumTemplateArgs != 0 ) ) {
LookupInParamArgLists(TemplatePtr->getTemplateParameters(),
Inst.TemplateArgs, Inst.NumTemplateArgs);
if( QueryResults.size() )
return true;
}
return TraverseDecl(Inst.Entity);
}
bool VisitFunctionDecl(FunctionDecl* decl) {
LookupInDeclContext(decl);
if( QueryResults.size() )
return true;
if( decl->isFunctionTemplateSpecialization() ) {
FunctionTemplateSpecializationInfo* SpecInfo = decl->getTemplateSpecializationInfo();
FunctionTemplateDecl* TempDecl = SpecInfo->getTemplate();
if( TempDecl && TempDecl->getTemplateParameters() &&
( TempDecl->getTemplateParameters()->size() != 0 ) &&
( SpecInfo->TemplateArguments->size() != 0 ) ) {
LookupInParamArgLists(TempDecl->getTemplateParameters(),
SpecInfo->TemplateArguments->data(), SpecInfo->TemplateArguments->size());
if( QueryResults.size() )
return true;
}
}
DeclContext* parent = decl->getParent();
if( TagDecl* t_decl = dyn_cast_or_null<TagDecl>(parent) )
return getDerived().VisitTagDecl(t_decl);
else {
LookupInDeclContext(parent, true);
if( QueryResults.size() )
return true;
}
return true;
}
bool VisitTagDecl(TagDecl* decl) {
LookupInDeclContext(decl);
if( QueryResults.size() )
return true;
if( ClassTemplateSpecializationDecl* spec_decl = dyn_cast<ClassTemplateSpecializationDecl>(decl) ) {
ClassTemplateDecl* TempDecl = spec_decl->getSpecializedTemplate();
if( TempDecl && TempDecl->getTemplateParameters() &&
( TempDecl->getTemplateParameters()->size() != 0 ) &&
( spec_decl->getTemplateArgs().size() != 0 ) ) {
LookupInParamArgLists(TempDecl->getTemplateParameters(),
spec_decl->getTemplateArgs().data(),
spec_decl->getTemplateArgs().size());
if( QueryResults.size() )
return true;
}
}
// TODO Shouldn't this be in the LookupInDeclContext function (or maybe even VisitDeclContex?)
DeclContext* parent = decl->getParent();
if( TagDecl* t_decl = dyn_cast_or_null<TagDecl>(parent) )
return getDerived().VisitTagDecl(t_decl);
else {
LookupInDeclContext(parent, true);
if( QueryResults.size() )
return true;
}
return true;
}
};
}
class TemplightDebugger::InteractiveAgent {
public:
void printEntryImpl(const TemplateDebuggerEntry& Entry) {
llvm::outs()
<< ( (Entry.IsTemplateBegin) ? "Entering " : "Leaving " )
<< InstantiationKindStrings[Entry.Inst.Kind] << " of " << Entry.Name << '\n'
<< " at " << Entry.FileName << '|' << Entry.Line << '|' << Entry.Column
<< " (Memory usage: " << Entry.MemoryUsage << ")\n";
if ( verboseMode ) {
std::string SrcPointer = getSrcPointer(TheSema, Entry.Inst.PointOfInstantiation);
if( !SrcPointer.empty() )
llvm::outs() << SrcPointer << '\n';
}
};
void skipEntry(const TemplateDebuggerEntry &Entry) {
if ( CurrentSkippedEntry.IsTemplateBegin )
return; // Already skipping entries.
if ( !Entry.IsTemplateBegin )
return; // Cannot skip entry that has ended already.
CurrentSkippedEntry = Entry;
};
struct breakpointMatchesStr {
llvm::StringRef str;
breakpointMatchesStr(const std::string& aStr) : str(&aStr[0], aStr.size()) { };
bool operator()(std::pair<std::string,llvm::Regex>& aReg) const {
return aReg.second.match(str);
};
};
bool shouldIgnoreEntry(const TemplateDebuggerEntry &Entry) {
// Check if it's been commanded to ignore things:
if ( ignoreAll )
return true;
if ( ignoreUntilBreakpoint ) {
std::vector< std::pair<std::string,llvm::Regex> >::iterator it = std::find_if(
Breakpoints.begin(), Breakpoints.end(), breakpointMatchesStr(Entry.Name));
if ( it != Breakpoints.end() )
return false;
else
return true;
}
if ( ignoreUntilLastEnds ) {
if ( ( EntriesStack.size() > 0 )
&& ( EntriesStack.back().Inst.Kind == Entry.Inst.Kind )
&& ( EntriesStack.back().Inst.Entity == Entry.Inst.Entity ) )
return false;
else
return true;
}
// Check the black-lists:
// (1) Is currently ignoring entries?
if ( CurrentSkippedEntry.IsTemplateBegin ) {
// Should skip the entry, but need to check if it's the last entry to skip:
if ( !Entry.IsTemplateBegin
&& ( CurrentSkippedEntry.Inst.Kind == Entry.Inst.Kind )
&& ( CurrentSkippedEntry.Inst.Entity == Entry.Inst.Entity ) ) {
CurrentSkippedEntry.IsTemplateBegin = false;
}
return true;
}
// (2) Context:
if ( CoRegex ) {
if ( NamedDecl* p_context = dyn_cast_or_null<NamedDecl>(Entry.Inst.Entity->getDeclContext()) ) {
std::string co_name;
llvm::raw_string_ostream OS(co_name);
p_context->getNameForDiagnostic(OS, TheSema.getLangOpts(), true);
OS.str(); // flush to string.
if ( CoRegex->match(co_name) ) {
skipEntry(Entry);
return true;
}
}
}
// (3) Identifier:
if ( IdRegex ) {
if ( NamedDecl* p_ndecl = dyn_cast_or_null<NamedDecl>(Entry.Inst.Entity) ) {
std::string id_name;
llvm::raw_string_ostream OS(id_name);
p_ndecl->getNameForDiagnostic(OS, TheSema.getLangOpts(), true);
OS.str(); // flush to string.
if ( IdRegex->match(id_name) ) {
skipEntry(Entry);
return true;
}
}
}
// Avoid some duplication of memoization entries:
if ( Entry.Inst.Kind == ActiveTemplateInstantiation::Memoization ) {
if ( !LastBeginEntry.IsTemplateBegin
&& ( LastBeginEntry.Inst.Kind == Entry.Inst.Kind )
&& ( LastBeginEntry.Inst.Entity == Entry.Inst.Entity ) ) {
return true;
}
}
return false;
};
static void getLineFromStdIn(std::string& s) {
char c = 0;
s = "";
int i = std::getchar();
if ( i == EOF ) {
std::clearerr(stdin);
return;
};
c = char(i);
while ( c != '\n' ) {
s.push_back(c);
i = std::getchar();
if ( i == EOF ) {
std::clearerr(stdin);
return;
};
c = char(i);
};
};
static void flushStdIn() {
std::string s;
getLineFromStdIn(s);
};
static void getTokenizeCommand(const std::string& s, std::string& com, std::string& arg) {
com = "";
unsigned i = 0;
while( ( i < s.size() ) && ( std::isspace(s[i]) ) )
++i;
while( ( i < s.size() ) && ( !std::isspace(s[i]) ) ) {
com += s[i];
++i;
};
while( ( i < s.size() ) && ( std::isspace(s[i]) ) )
++i;
unsigned e = s.size();
while( ( e > i ) && ( std::isspace(s[e-1]) ) )
--e;
arg = s.substr(i, e - i);
};
void processInputs() {
std::string user_in;
while(true) {
llvm::outs() << "(tdb) ";
getLineFromStdIn(user_in);
if ( user_in == "" )
user_in = LastUserCommand;
LastUserCommand = user_in;
std::string user_command, com_arg;
getTokenizeCommand(user_in, user_command, com_arg);
if ( ( user_command == "i" ) ||
( user_command == "info" ) ) {
if ( ( com_arg == "f" ) ||
( com_arg == "frame" ) ) {
if ( EntriesStack.size() > 0 )
printEntryImpl(EntriesStack.back());
continue;
}
else if ( ( com_arg == "b" ) ||
( com_arg == "break" ) ) {
for(unsigned i = 0; i < Breakpoints.size(); ++i)
if ( !Breakpoints[i].second.match("-") )
llvm::outs() << "Breakpoint " << i
<< " for " << Breakpoints[i].first << '\n';
continue;
}
else if ( ( com_arg == "s" ) ||
( com_arg == "stack" ) ) {
user_command = "bt";
}
else {
llvm::outs() << "Invalid input!\n";
continue;
}
}
if ( user_command == "setmode" ) {
if ( com_arg == "verbose" ) {
verboseMode = true;
continue;
}
else if ( com_arg == "quiet" ) {
verboseMode = false;
continue;
}
else {
llvm::outs() << "Invalid setmode command!\n";
continue;
}
}
if ( ( user_command == "r" ) ||
( user_command == "c" ) ||
( user_command == "run" ) ||
( user_command == "continue" ) ) {
ignoreAll = false;
ignoreUntilLastEnds = false;
ignoreUntilBreakpoint = true;
return;
}
else if ( ( user_command == "k" ) ||
( user_command == "q" ) ||
( user_command == "kill" ) ||
( user_command == "quit" ) ) {
ignoreAll = true;
ignoreUntilLastEnds = false;
ignoreUntilBreakpoint = false;
return;
}
else if ( ( user_command == "n" ) ||
( user_command == "next" ) ) {
ignoreAll = false;
ignoreUntilLastEnds = (EntriesStack.size() > 0);
ignoreUntilBreakpoint = false;
return;
}
else if ( ( user_command == "s" ) ||
( user_command == "step" ) ) {
ignoreAll = false;
ignoreUntilLastEnds = false;
ignoreUntilBreakpoint = false;
return;
}
else if ( ( user_command == "l" ) ||
( user_command == "lookup" ) ) {
TemplateArgRecorder rec(TheSema, "^" + llvm::Regex::escape(com_arg) + "$",
TemplateArgRecorder::LookForDecl);
if( EntriesStack.empty() )
rec.LookupInDeclContext(TheSema.getCurLexicalContext(), true);
else
rec.TraverseActiveTempInstantiation(EntriesStack.back().Inst);
for(std::vector<TemplateArgRecorder::PrintableQueryResult>::const_iterator it = rec.QueryResults.begin();
it != rec.QueryResults.end(); ++it) {
llvm::outs()
<< "Found " << it->Name << '\n'
<< " at " << it->FileName << '|' << it->Line << '|' << it->Column << '\n';
if( verboseMode && !it->SrcPointer.empty() )
llvm::outs() << it->SrcPointer << '\n';
};
continue;
}
else if ( ( user_command == "rl" ) ||
( user_command == "rlookup" ) ) {
TemplateArgRecorder rec(TheSema, com_arg, TemplateArgRecorder::LookForDecl);
if( EntriesStack.empty() )
rec.LookupInDeclContext(TheSema.getCurLexicalContext(), true);
else
rec.TraverseActiveTempInstantiation(EntriesStack.back().Inst);
for(std::vector<TemplateArgRecorder::PrintableQueryResult>::const_iterator it = rec.QueryResults.begin();
it != rec.QueryResults.end(); ++it) {
llvm::outs()
<< "Found " << it->Name << '\n'
<< " at " << it->FileName << '|' << it->Line << '|' << it->Column << '\n';
if( verboseMode && !it->SrcPointer.empty() )
llvm::outs() << it->SrcPointer << '\n';
};
continue;
}
else if ( ( user_command == "t" ) ||
( user_command == "typeof" ) ) {
TemplateArgRecorder rec(TheSema, "^" + llvm::Regex::escape(com_arg) + "$",
TemplateArgRecorder::LookForType);
if( EntriesStack.empty() )
rec.LookupInDeclContext(TheSema.getCurLexicalContext(), true);
else
rec.TraverseActiveTempInstantiation(EntriesStack.back().Inst);
for(std::vector<TemplateArgRecorder::PrintableQueryResult>::const_iterator it = rec.QueryResults.begin();
it != rec.QueryResults.end(); ++it) {
llvm::outs()
<< "Found " << it->Name << '\n'
<< " at " << it->FileName << '|' << it->Line << '|' << it->Column << '\n';
if( verboseMode && !it->SrcPointer.empty() )
llvm::outs() << it->SrcPointer << '\n';
};
continue;
}
else if ( ( user_command == "rt" ) ||
( user_command == "rtypeof" ) ) {
TemplateArgRecorder rec(TheSema, com_arg, TemplateArgRecorder::LookForType);
if( EntriesStack.empty() )
rec.LookupInDeclContext(TheSema.getCurLexicalContext(), true);
else
rec.TraverseActiveTempInstantiation(EntriesStack.back().Inst);
for(std::vector<TemplateArgRecorder::PrintableQueryResult>::const_iterator it = rec.QueryResults.begin();
it != rec.QueryResults.end(); ++it) {
llvm::outs()
<< "Found " << it->Name << '\n'
<< " at " << it->FileName << '|' << it->Line << '|' << it->Column << '\n';
if( verboseMode && !it->SrcPointer.empty() )
llvm::outs() << it->SrcPointer << '\n';
};
continue;
}
else if ( ( user_command == "e" ) ||
( user_command == "eval" ) ) {
TemplateArgRecorder rec(TheSema, "^" + llvm::Regex::escape(com_arg) + "$",
TemplateArgRecorder::LookForValue);
if( EntriesStack.empty() )
rec.LookupInDeclContext(TheSema.getCurLexicalContext(), true);
else
rec.TraverseActiveTempInstantiation(EntriesStack.back().Inst);
for(std::vector<TemplateArgRecorder::PrintableQueryResult>::const_iterator it = rec.QueryResults.begin();
it != rec.QueryResults.end(); ++it) {
llvm::outs() << it->Name << '\n';
};
continue;
}
else if ( ( user_command == "re" ) ||
( user_command == "reval" ) ) {
TemplateArgRecorder rec(TheSema, com_arg, TemplateArgRecorder::LookForValue);
if( EntriesStack.empty() )
rec.LookupInDeclContext(TheSema.getCurLexicalContext(), true);
else
rec.TraverseActiveTempInstantiation(EntriesStack.back().Inst);
for(std::vector<TemplateArgRecorder::PrintableQueryResult>::const_iterator it = rec.QueryResults.begin();
it != rec.QueryResults.end(); ++it) {
llvm::outs() << it->Name << '\n';
};
continue;
}
else if ( ( user_command == "w" ) ||
( user_command == "whois" ) ) {
TemplateArgRecorder rec(TheSema, "^" + llvm::Regex::escape(com_arg) + "$",
TemplateArgRecorder::LookForDecl |
TemplateArgRecorder::LookForType |
TemplateArgRecorder::LookForValue);
if( EntriesStack.empty() )
rec.LookupInDeclContext(TheSema.getCurLexicalContext(), true);
else
rec.TraverseActiveTempInstantiation(EntriesStack.back().Inst);
for(std::vector<TemplateArgRecorder::PrintableQueryResult>::const_iterator it = rec.QueryResults.begin();
it != rec.QueryResults.end(); ++it) {
llvm::outs()
<< "Found " << it->Name << '\n'
<< " at " << it->FileName << '|' << it->Line << '|' << it->Column << '\n';
if( verboseMode && !it->SrcPointer.empty() )
llvm::outs() << it->SrcPointer << '\n';
};
continue;
}
else if ( ( user_command == "rw" ) ||
( user_command == "rwhois" ) ) {
TemplateArgRecorder rec(TheSema, com_arg,
TemplateArgRecorder::LookForDecl |
TemplateArgRecorder::LookForType |
TemplateArgRecorder::LookForValue);
if( EntriesStack.empty() )
rec.LookupInDeclContext(TheSema.getCurLexicalContext(), true);
else
rec.TraverseActiveTempInstantiation(EntriesStack.back().Inst);
for(std::vector<TemplateArgRecorder::PrintableQueryResult>::const_iterator it = rec.QueryResults.begin();
it != rec.QueryResults.end(); ++it) {
llvm::outs()
<< "Found " << it->Name << '\n'
<< " at " << it->FileName << '|' << it->Line << '|' << it->Column << '\n';
if( verboseMode && !it->SrcPointer.empty() )
llvm::outs() << it->SrcPointer << '\n';
};
continue;
}
else if ( ( user_command == "b" ) ||
( user_command == "break" ) ) {
std::vector< std::pair<std::string,llvm::Regex> >::iterator it = std::find_if(
Breakpoints.begin(), Breakpoints.end(), breakpointMatchesStr(com_arg));
if ( it == Breakpoints.end() ) {
it = std::find_if(Breakpoints.begin(), Breakpoints.end(), breakpointMatchesStr("-"));
if ( it == Breakpoints.end() )
it = Breakpoints.insert(Breakpoints.end(),
std::pair<std::string,llvm::Regex>(llvm::Regex::escape(com_arg),
llvm::Regex(llvm::Regex::escape(com_arg))));
else
*it = std::pair<std::string,llvm::Regex>(llvm::Regex::escape(com_arg),
llvm::Regex(llvm::Regex::escape(com_arg)));
}
llvm::outs() << "Breakpoint " << (it - Breakpoints.begin())
<< " for " << com_arg << '\n';
continue;
}
else if ( ( user_command == "rb" ) ||
( user_command == "rbreak" ) ) {
std::vector< std::pair<std::string,llvm::Regex> >::iterator it =
std::find_if(Breakpoints.begin(), Breakpoints.end(), breakpointMatchesStr("-"));
if ( it == Breakpoints.end() )
it = Breakpoints.insert(Breakpoints.end(),
std::pair<std::string,llvm::Regex>(com_arg,
llvm::Regex(com_arg)));
else
*it = std::pair<std::string,llvm::Regex>(com_arg,
llvm::Regex(com_arg));
llvm::outs() << "Breakpoint " << (it - Breakpoints.begin())
<< " for " << com_arg << '\n';
continue;
}
else if ( ( user_command == "d" ) ||
( user_command == "delete" ) ) {
int ind = 0;
if ( std::sscanf(com_arg.c_str(), "%d", &ind) < 1 ) {
llvm::outs() << "Invalid input!\n";
continue;
}
llvm::outs() << "Deleted breakpoint " << ind
<< " for " << Breakpoints[ind].first << '\n';
Breakpoints[ind] = std::pair<std::string,llvm::Regex>("-", llvm::Regex("^-$"));
continue;
}
else if ( ( user_command == "bt" ) ||
( user_command == "backtrace" ) ||
( user_command == "where" ) ) {
for(std::vector<TemplateDebuggerEntry>::reverse_iterator it = EntriesStack.rbegin();
it != EntriesStack.rend(); ++it) {
llvm::outs()
<< InstantiationKindStrings[it->Inst.Kind] << " of " << it->Name
<< " at " << it->FileName << '|'
<< it->Line << '|' << it->Column << '\n';
}
continue;
}
else {
llvm::outs() << "Invalid input!\n";
continue;
}
};
};
void printRawEntry(const TemplateDebuggerEntry &Entry) {
if ( shouldIgnoreEntry(Entry) )
return;
if ( Entry.IsTemplateBegin ) {
EntriesStack.push_back(Entry);
LastBeginEntry = Entry;
};
printEntryImpl(Entry);
if ( !Entry.IsTemplateBegin &&
( Entry.Inst.Kind == ActiveTemplateInstantiation::Memoization ) )
LastBeginEntry.IsTemplateBegin = false;
if ( !Entry.IsTemplateBegin &&
( EntriesStack.size() > 0 ) &&
( Entry.Inst.Kind == EntriesStack.back().Inst.Kind ) &&
( Entry.Inst.Entity == EntriesStack.back().Inst.Entity ) ) {
EntriesStack.pop_back();
};
processInputs();
};
void startTrace() {
llvm::outs() << "Welcome to the Templight debugger!\n"
<< "Begin by entering 'run' after setting breakpoints.\n";
processInputs();
};
void endTrace() {
llvm::outs() << "Templight debugging session has ended. Goodbye!\n";
};
InteractiveAgent(const Sema &aTheSema) : TheSema(aTheSema), ignoreAll(false),
ignoreUntilLastEnds(false), ignoreUntilBreakpoint(false), verboseMode(false) {
CurrentSkippedEntry.IsTemplateBegin = false;