/// Runs <code>xcrun -f clang</code> in order to find the location of Clang for
/// the currently active Xcode.
///
/// We get the "currently active" part by passing through the DEVELOPER_DIR
/// environment variable (along with the rest of the environment).
static bool findXcodeClangPath(llvm::SmallVectorImpl<char> &path) {
assert(path.empty());
auto xcrunPath = llvm::sys::findProgramByName("xcrun");
if (!xcrunPath.getError()) {
const char *args[] = {"-f", "clang", nullptr};
sys::TaskQueue queue;
queue.addTask(xcrunPath->c_str(), args, /*Env=*/llvm::None,
/*Context=*/nullptr,
/*SeparateErrors=*/true);
queue.execute(nullptr,
[&path](sys::ProcessId PID, int returnCode, StringRef output,
StringRef errors,
sys::TaskProcessInformation ProcInfo,
void *unused) -> sys::TaskFinishedResponse {
if (returnCode == 0) {
output = output.rtrim();
path.append(output.begin(), output.end());
}
return sys::TaskFinishedResponse::ContinueExecution;
});
}
return !path.empty();
}
static void appendCodePoint(unsigned Codepoint,
llvm::SmallVectorImpl<char> &Str) {
char ResultBuf[4];
char *ResultPtr = ResultBuf;
bool Res = llvm::ConvertCodePointToUTF8(Codepoint, ResultPtr);
(void)Res;
assert(Res && "Unexpected conversion failure");
Str.append(ResultBuf, ResultPtr);
}
llvm::StringRef
ParserImpl::MergeTokensUntil(const unsigned int* toks,
unsigned int num_toks,
SourceLocation* start,
SourceLocation* end,
llvm::SmallVectorImpl<char>& buffer,
bool stop_at_eos,
bool stop_at_ws)
{
buffer.clear();
*start = *end = m_token.getLocation();
for (;;)
{
// If we found one of the tokens, stop.
for (unsigned i = 0; i < num_toks; ++i)
{
if (m_token.is(toks[i]))
goto done;
}
// If we hit end of statement, stop.
if (stop_at_eos && m_token.isEndOfStatement())
break;
// Turn the token back into characters.
// The first if's are optimizations for common cases.
llvm::StringRef data;
if (m_token.isLiteral())
{
data = m_token.getLiteral();
}
else if (m_token.is(Token::identifier) || m_token.is(Token::label))
{
IdentifierInfo* ii = m_token.getIdentifierInfo();
data = ii->getName();
}
else
{
// Get the raw data from the source manager.
SourceManager& smgr = m_preproc.getSourceManager();
data =
llvm::StringRef(smgr.getCharacterData(m_token.getLocation()),
m_token.getLength());
}
buffer.append(data.begin(), data.end());
*end = m_token.getEndLocation();
ConsumeAnyToken();
// If we hit a token with leading space, stop.
// We do this down here in case the first token had preceding ws.
if (stop_at_ws && m_token.hasLeadingSpace())
break;
}
done:
return llvm::StringRef(buffer.data(), buffer.size());
}
static void DummyArgToStringFn(Diagnostic::ArgumentKind AK, intptr_t QT,
const char *Modifier, unsigned ML,
const char *Argument, unsigned ArgLen,
const Diagnostic::ArgumentValue *PrevArgs,
unsigned NumPrevArgs,
llvm::SmallVectorImpl<char> &Output,
void *Cookie) {
const char *Str = "<can't format argument>";
Output.append(Str, Str+strlen(Str));
}
void
HostThreadLinux::GetName(lldb::thread_t thread, llvm::SmallVectorImpl<char> &name)
{
// Read /proc/$TID/comm file.
lldb::DataBufferSP buf_sp = process_linux::ProcFileReader::ReadIntoDataBuffer(thread, "comm");
const char *comm_str = (const char *)buf_sp->GetBytes();
const char *cr_str = ::strchr(comm_str, '\n');
size_t length = cr_str ? (cr_str - comm_str) : strlen(comm_str);
name.clear();
name.append(comm_str, comm_str + length);
}
/// FormatDiagnostic - Format this diagnostic into a string, substituting the
/// formal arguments into the %0 slots. The result is appended onto the Str
/// array.
void DiagnosticInfo::
FormatDiagnostic(llvm::SmallVectorImpl<char> &OutStr) const {
if (!StoredDiagMessage.empty()) {
OutStr.append(StoredDiagMessage.begin(), StoredDiagMessage.end());
return;
}
llvm::StringRef Diag =
getDiags()->getDiagnosticIDs()->getDescription(getID());
FormatDiagnostic(Diag.begin(), Diag.end(), OutStr);
}
/// HandleSelectModifier - Handle the integer 'select' modifier. This is used
/// like this: %select{foo|bar|baz}2. This means that the integer argument
/// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'.
/// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'.
/// This is very useful for certain classes of variant diagnostics.
static void HandleSelectModifier(unsigned ValNo,
const char *Argument, unsigned ArgumentLen,
llvm::SmallVectorImpl<char> &OutStr) {
const char *ArgumentEnd = Argument+ArgumentLen;
// Skip over 'ValNo' |'s.
while (ValNo) {
const char *NextVal = std::find(Argument, ArgumentEnd, '|');
assert(NextVal != ArgumentEnd && "Value for integer select modifier was"
" larger than the number of options in the diagnostic string!");
Argument = NextVal+1; // Skip this string.
--ValNo;
}
// Get the end of the value. This is either the } or the |.
const char *EndPtr = std::find(Argument, ArgumentEnd, '|');
// Add the value to the output string.
OutStr.append(Argument, EndPtr);
}
void
HostThreadFreeBSD::GetName(lldb::tid_t tid, llvm::SmallVectorImpl<char> &name)
{
name.clear();
int pid = Host::GetCurrentProcessID();
struct kinfo_proc *kp = nullptr, *nkp;
size_t len = 0;
int error;
int ctl[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID | KERN_PROC_INC_THREAD, (int)pid};
while (1)
{
error = sysctl(ctl, 4, kp, &len, nullptr, 0);
if (kp == nullptr || (error != 0 && errno == ENOMEM))
{
// Add extra space in case threads are added before next call.
len += sizeof(*kp) + len / 10;
nkp = (struct kinfo_proc *)realloc(kp, len);
if (nkp == nullptr)
{
free(kp);
return;
}
kp = nkp;
continue;
}
if (error != 0)
len = 0;
break;
}
for (size_t i = 0; i < len / sizeof(*kp); i++)
{
if (kp[i].ki_tid == (lwpid_t)tid)
{
name.append(kp[i].ki_tdname, kp[i].ki_tdname + strlen(kp[i].ki_tdname));
break;
}
}
free(kp);
}
void FunctionSignatureTransformDescriptor::addThunkArgument(
ArgumentDescriptor &AD, SILBuilder &Builder, SILBasicBlock *BB,
llvm::SmallVectorImpl<SILValue> &NewArgs) {
// Dead argument.
if (AD.IsEntirelyDead) {
return;
}
// Explode the argument.
if (AD.Explode) {
llvm::SmallVector<SILValue, 4> LeafValues;
AD.ProjTree.createTreeFromValue(Builder, BB->getParent()->getLocation(),
BB->getArgument(AD.Index), LeafValues);
NewArgs.append(LeafValues.begin(), LeafValues.end());
return;
}
// All other arguments get pushed as what they are.
NewArgs.push_back(BB->getArgument(AD.Index));
}
/// HandlePluralModifier - Handle the integer 'plural' modifier. This is used
/// for complex plural forms, or in languages where all plurals are complex.
/// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are
/// conditions that are tested in order, the form corresponding to the first
/// that applies being emitted. The empty condition is always true, making the
/// last form a default case.
/// Conditions are simple boolean expressions, where n is the number argument.
/// Here are the rules.
/// condition := expression | empty
/// empty := -> always true
/// expression := numeric [',' expression] -> logical or
/// numeric := range -> true if n in range
/// | '%' number '=' range -> true if n % number in range
/// range := number
/// | '[' number ',' number ']' -> ranges are inclusive both ends
///
/// Here are some examples from the GNU gettext manual written in this form:
/// English:
/// {1:form0|:form1}
/// Latvian:
/// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0}
/// Gaeilge:
/// {1:form0|2:form1|:form2}
/// Romanian:
/// {1:form0|0,%100=[1,19]:form1|:form2}
/// Lithuanian:
/// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1}
/// Russian (requires repeated form):
/// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2}
/// Slovak
/// {1:form0|[2,4]:form1|:form2}
/// Polish (requires repeated form):
/// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2}
static void HandlePluralModifier(unsigned ValNo,
const char *Argument, unsigned ArgumentLen,
llvm::SmallVectorImpl<char> &OutStr) {
const char *ArgumentEnd = Argument + ArgumentLen;
while (1) {
assert(Argument < ArgumentEnd && "Plural expression didn't match.");
const char *ExprEnd = Argument;
while (*ExprEnd != ':') {
assert(ExprEnd != ArgumentEnd && "Plural missing expression end");
++ExprEnd;
}
if (EvalPluralExpr(ValNo, Argument, ExprEnd)) {
Argument = ExprEnd + 1;
ExprEnd = ScanFormat(Argument, ArgumentEnd, '|');
OutStr.append(Argument, ExprEnd);
return;
}
Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1;
}
}
void clang::FormatASTNodeDiagnosticArgument(Diagnostic::ArgumentKind Kind,
intptr_t Val,
const char *Modifier,
unsigned ModLen,
const char *Argument,
unsigned ArgLen,
const Diagnostic::ArgumentValue *PrevArgs,
unsigned NumPrevArgs,
llvm::SmallVectorImpl<char> &Output,
void *Cookie) {
ASTContext &Context = *static_cast<ASTContext*>(Cookie);
std::string S;
bool NeedQuotes = true;
switch (Kind) {
default: assert(0 && "unknown ArgumentKind");
case Diagnostic::ak_qualtype: {
assert(ModLen == 0 && ArgLen == 0 &&
"Invalid modifier for QualType argument");
QualType Ty(QualType::getFromOpaquePtr(reinterpret_cast<void*>(Val)));
S = ConvertTypeToDiagnosticString(Context, Ty, PrevArgs, NumPrevArgs);
NeedQuotes = false;
break;
}
case Diagnostic::ak_declarationname: {
DeclarationName N = DeclarationName::getFromOpaqueInteger(Val);
S = N.getAsString();
if (ModLen == 9 && !memcmp(Modifier, "objcclass", 9) && ArgLen == 0)
S = '+' + S;
else if (ModLen == 12 && !memcmp(Modifier, "objcinstance", 12)
&& ArgLen==0)
S = '-' + S;
else
assert(ModLen == 0 && ArgLen == 0 &&
"Invalid modifier for DeclarationName argument");
break;
}
case Diagnostic::ak_nameddecl: {
bool Qualified;
if (ModLen == 1 && Modifier[0] == 'q' && ArgLen == 0)
Qualified = true;
else {
assert(ModLen == 0 && ArgLen == 0 &&
"Invalid modifier for NamedDecl* argument");
Qualified = false;
}
reinterpret_cast<NamedDecl*>(Val)->
getNameForDiagnostic(S, Context.PrintingPolicy, Qualified);
break;
}
case Diagnostic::ak_nestednamespec: {
llvm::raw_string_ostream OS(S);
reinterpret_cast<NestedNameSpecifier*>(Val)->print(OS,
Context.PrintingPolicy);
NeedQuotes = false;
break;
}
case Diagnostic::ak_declcontext: {
DeclContext *DC = reinterpret_cast<DeclContext *> (Val);
assert(DC && "Should never have a null declaration context");
if (DC->isTranslationUnit()) {
// FIXME: Get these strings from some localized place
if (Context.getLangOptions().CPlusPlus)
S = "the global namespace";
else
S = "the global scope";
} else if (TypeDecl *Type = dyn_cast<TypeDecl>(DC)) {
S = ConvertTypeToDiagnosticString(Context,
Context.getTypeDeclType(Type),
PrevArgs, NumPrevArgs);
} else {
// FIXME: Get these strings from some localized place
NamedDecl *ND = cast<NamedDecl>(DC);
if (isa<NamespaceDecl>(ND))
S += "namespace ";
else if (isa<ObjCMethodDecl>(ND))
S += "method ";
else if (isa<FunctionDecl>(ND))
S += "function ";
S += "'";
ND->getNameForDiagnostic(S, Context.PrintingPolicy, true);
S += "'";
}
NeedQuotes = false;
break;
}
}
if (NeedQuotes)
Output.push_back('\'');
Output.append(S.begin(), S.end());
if (NeedQuotes)
Output.push_back('\'');
}
void DiagnosticInfo::
FormatDiagnostic(const char *DiagStr, const char *DiagEnd,
llvm::SmallVectorImpl<char> &OutStr) const {
/// FormattedArgs - Keep track of all of the arguments formatted by
/// ConvertArgToString and pass them into subsequent calls to
/// ConvertArgToString, allowing the implementation to avoid redundancies in
/// obvious cases.
llvm::SmallVector<Diagnostic::ArgumentValue, 8> FormattedArgs;
while (DiagStr != DiagEnd) {
if (DiagStr[0] != '%') {
// Append non-%0 substrings to Str if we have one.
const char *StrEnd = std::find(DiagStr, DiagEnd, '%');
OutStr.append(DiagStr, StrEnd);
DiagStr = StrEnd;
continue;
} else if (ispunct(DiagStr[1])) {
OutStr.push_back(DiagStr[1]); // %% -> %.
DiagStr += 2;
continue;
}
// Skip the %.
++DiagStr;
// This must be a placeholder for a diagnostic argument. The format for a
// placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0".
// The digit is a number from 0-9 indicating which argument this comes from.
// The modifier is a string of digits from the set [-a-z]+, arguments is a
// brace enclosed string.
const char *Modifier = 0, *Argument = 0;
unsigned ModifierLen = 0, ArgumentLen = 0;
// Check to see if we have a modifier. If so eat it.
if (!isdigit(DiagStr[0])) {
Modifier = DiagStr;
while (DiagStr[0] == '-' ||
(DiagStr[0] >= 'a' && DiagStr[0] <= 'z'))
++DiagStr;
ModifierLen = DiagStr-Modifier;
// If we have an argument, get it next.
if (DiagStr[0] == '{') {
++DiagStr; // Skip {.
Argument = DiagStr;
DiagStr = ScanFormat(DiagStr, DiagEnd, '}');
assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!");
ArgumentLen = DiagStr-Argument;
++DiagStr; // Skip }.
}
}
assert(isdigit(*DiagStr) && "Invalid format for argument in diagnostic");
unsigned ArgNo = *DiagStr++ - '0';
Diagnostic::ArgumentKind Kind = getArgKind(ArgNo);
switch (Kind) {
// ---- STRINGS ----
case Diagnostic::ak_std_string: {
const std::string &S = getArgStdStr(ArgNo);
assert(ModifierLen == 0 && "No modifiers for strings yet");
OutStr.append(S.begin(), S.end());
break;
}
case Diagnostic::ak_c_string: {
const char *S = getArgCStr(ArgNo);
assert(ModifierLen == 0 && "No modifiers for strings yet");
// Don't crash if get passed a null pointer by accident.
if (!S)
S = "(null)";
OutStr.append(S, S + strlen(S));
break;
}
// ---- INTEGERS ----
case Diagnostic::ak_sint: {
int Val = getArgSInt(ArgNo);
if (ModifierIs(Modifier, ModifierLen, "select")) {
HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen, OutStr);
} else if (ModifierIs(Modifier, ModifierLen, "s")) {
HandleIntegerSModifier(Val, OutStr);
} else if (ModifierIs(Modifier, ModifierLen, "plural")) {
HandlePluralModifier((unsigned)Val, Argument, ArgumentLen, OutStr);
} else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
HandleOrdinalModifier((unsigned)Val, OutStr);
} else {
assert(ModifierLen == 0 && "Unknown integer modifier");
llvm::raw_svector_ostream(OutStr) << Val;
}
break;
}
case Diagnostic::ak_uint: {
unsigned Val = getArgUInt(ArgNo);
if (ModifierIs(Modifier, ModifierLen, "select")) {
HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr);
} else if (ModifierIs(Modifier, ModifierLen, "s")) {
HandleIntegerSModifier(Val, OutStr);
} else if (ModifierIs(Modifier, ModifierLen, "plural")) {
HandlePluralModifier((unsigned)Val, Argument, ArgumentLen, OutStr);
} else if (ModifierIs(Modifier, ModifierLen, "ordinal")) {
HandleOrdinalModifier(Val, OutStr);
} else {
assert(ModifierLen == 0 && "Unknown integer modifier");
llvm::raw_svector_ostream(OutStr) << Val;
}
break;
}
// ---- NAMES and TYPES ----
case Diagnostic::ak_identifierinfo: {
const IdentifierInfo *II = getArgIdentifier(ArgNo);
assert(ModifierLen == 0 && "No modifiers for strings yet");
// Don't crash if get passed a null pointer by accident.
if (!II) {
const char *S = "(null)";
OutStr.append(S, S + strlen(S));
continue;
}
llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\'';
break;
}
case Diagnostic::ak_qualtype:
case Diagnostic::ak_declarationname:
case Diagnostic::ak_nameddecl:
case Diagnostic::ak_nestednamespec:
case Diagnostic::ak_declcontext:
getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo),
Modifier, ModifierLen,
Argument, ArgumentLen,
FormattedArgs.data(), FormattedArgs.size(),
OutStr);
break;
}
// Remember this argument info for subsequent formatting operations. Turn
// std::strings into a null terminated string to make it be the same case as
// all the other ones.
if (Kind != Diagnostic::ak_std_string)
FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo)));
else
FormattedArgs.push_back(std::make_pair(Diagnostic::ak_c_string,
(intptr_t)getArgStdStr(ArgNo).c_str()));
}
}
