/// ReadCheckFile - Read the check file, which specifies the sequence of
/// expected strings. The strings are added to the CheckStrings vector.
/// Returns true in case of an error, false otherwise.
static bool ReadCheckFile(SourceMgr &SM,
std::vector<CheckString> &CheckStrings) {
OwningPtr<MemoryBuffer> File;
if (error_code ec =
MemoryBuffer::getFileOrSTDIN(CheckFilename.c_str(), File)) {
errs() << "Could not open check file '" << CheckFilename << "': "
<< ec.message() << '\n';
return true;
}
// If we want to canonicalize whitespace, strip excess whitespace from the
// buffer containing the CHECK lines. Remove DOS style line endings.
MemoryBuffer *F =
CanonicalizeInputFile(File.take(), NoCanonicalizeWhiteSpace);
SM.AddNewSourceBuffer(F, SMLoc());
// Find all instances of CheckPrefix followed by : in the file.
StringRef Buffer = F->getBuffer();
std::vector<std::pair<SMLoc, Pattern> > NotMatches;
// LineNumber keeps track of the line on which CheckPrefix instances are
// found.
unsigned LineNumber = 1;
while (1) {
// See if Prefix occurs in the memory buffer.
size_t PrefixLoc = Buffer.find(CheckPrefix);
// If we didn't find a match, we're done.
if (PrefixLoc == StringRef::npos)
break;
LineNumber += Buffer.substr(0, PrefixLoc).count('\n');
Buffer = Buffer.substr(PrefixLoc);
const char *CheckPrefixStart = Buffer.data();
// When we find a check prefix, keep track of whether we find CHECK: or
// CHECK-NEXT:
bool IsCheckNext = false, IsCheckNot = false;
// Verify that the : is present after the prefix.
if (Buffer[CheckPrefix.size()] == ':') {
Buffer = Buffer.substr(CheckPrefix.size()+1);
} else if (Buffer.size() > CheckPrefix.size()+6 &&
memcmp(Buffer.data()+CheckPrefix.size(), "-NEXT:", 6) == 0) {
Buffer = Buffer.substr(CheckPrefix.size()+6);
IsCheckNext = true;
} else if (Buffer.size() > CheckPrefix.size()+5 &&
memcmp(Buffer.data()+CheckPrefix.size(), "-NOT:", 5) == 0) {
Buffer = Buffer.substr(CheckPrefix.size()+5);
IsCheckNot = true;
} else {
Buffer = Buffer.substr(1);
continue;
}
// Okay, we found the prefix, yay. Remember the rest of the line, but
// ignore leading and trailing whitespace.
Buffer = Buffer.substr(Buffer.find_first_not_of(" \t"));
// Scan ahead to the end of line.
size_t EOL = Buffer.find_first_of("\n\r");
// Remember the location of the start of the pattern, for diagnostics.
SMLoc PatternLoc = SMLoc::getFromPointer(Buffer.data());
// Parse the pattern.
Pattern P;
if (P.ParsePattern(Buffer.substr(0, EOL), SM, LineNumber))
return true;
Buffer = Buffer.substr(EOL);
// Verify that CHECK-NEXT lines have at least one CHECK line before them.
if (IsCheckNext && CheckStrings.empty()) {
SM.PrintMessage(SMLoc::getFromPointer(CheckPrefixStart),
SourceMgr::DK_Error,
"found '"+CheckPrefix+"-NEXT:' without previous '"+
CheckPrefix+ ": line");
return true;
}
// Handle CHECK-NOT.
if (IsCheckNot) {
NotMatches.push_back(std::make_pair(SMLoc::getFromPointer(Buffer.data()),
P));
continue;
}
// Okay, add the string we captured to the output vector and move on.
CheckStrings.push_back(CheckString(P,
PatternLoc,
IsCheckNext));
std::swap(NotMatches, CheckStrings.back().NotStrings);
}
// Add an EOF pattern for any trailing CHECK-NOTs.
if (!NotMatches.empty()) {
CheckStrings.push_back(CheckString(Pattern(true),
SMLoc::getFromPointer(Buffer.data()),
false));
std::swap(NotMatches, CheckStrings.back().NotStrings);
}
if (CheckStrings.empty()) {
errs() << "error: no check strings found with prefix '" << CheckPrefix
<< ":'\n";
return true;
}
return false;
}
/// ReadCheckFile - Read the check file, which specifies the sequence of
/// expected strings. The strings are added to the CheckStrings vector.
static bool ReadCheckFile(SourceMgr &SM,
std::vector<CheckString> &CheckStrings) {
// Open the check file, and tell SourceMgr about it.
std::string ErrorStr;
MemoryBuffer *F =
MemoryBuffer::getFileOrSTDIN(CheckFilename.c_str(), &ErrorStr);
if (F == 0) {
errs() << "Could not open check file '" << CheckFilename << "': "
<< ErrorStr << '\n';
return true;
}
// If we want to canonicalize whitespace, strip excess whitespace from the
// buffer containing the CHECK lines.
if (!NoCanonicalizeWhiteSpace)
F = CanonicalizeInputFile(F);
SM.AddNewSourceBuffer(F, SMLoc());
// Find all instances of CheckPrefix followed by : in the file.
StringRef Buffer = F->getBuffer();
std::vector<std::pair<SMLoc, Pattern> > NotMatches;
while (1) {
// See if Prefix occurs in the memory buffer.
Buffer = Buffer.substr(Buffer.find(CheckPrefix));
// If we didn't find a match, we're done.
if (Buffer.empty())
break;
const char *CheckPrefixStart = Buffer.data();
// When we find a check prefix, keep track of whether we find CHECK: or
// CHECK-NEXT:
bool IsCheckNext = false, IsCheckNot = false;
// Verify that the : is present after the prefix.
if (Buffer[CheckPrefix.size()] == ':') {
Buffer = Buffer.substr(CheckPrefix.size()+1);
} else if (Buffer.size() > CheckPrefix.size()+6 &&
memcmp(Buffer.data()+CheckPrefix.size(), "-NEXT:", 6) == 0) {
Buffer = Buffer.substr(CheckPrefix.size()+7);
IsCheckNext = true;
} else if (Buffer.size() > CheckPrefix.size()+5 &&
memcmp(Buffer.data()+CheckPrefix.size(), "-NOT:", 5) == 0) {
Buffer = Buffer.substr(CheckPrefix.size()+6);
IsCheckNot = true;
} else {
Buffer = Buffer.substr(1);
continue;
}
// Okay, we found the prefix, yay. Remember the rest of the line, but
// ignore leading and trailing whitespace.
Buffer = Buffer.substr(Buffer.find_first_not_of(" \t"));
// Scan ahead to the end of line.
size_t EOL = Buffer.find_first_of("\n\r");
// Remember the location of the start of the pattern, for diagnostics.
SMLoc PatternLoc = SMLoc::getFromPointer(Buffer.data());
// Parse the pattern.
Pattern P;
if (P.ParsePattern(Buffer.substr(0, EOL), SM))
return true;
Buffer = Buffer.substr(EOL);
// Verify that CHECK-NEXT lines have at least one CHECK line before them.
if (IsCheckNext && CheckStrings.empty()) {
SM.PrintMessage(SMLoc::getFromPointer(CheckPrefixStart),
"found '"+CheckPrefix+"-NEXT:' without previous '"+
CheckPrefix+ ": line", "error");
return true;
}
// Handle CHECK-NOT.
if (IsCheckNot) {
NotMatches.push_back(std::make_pair(SMLoc::getFromPointer(Buffer.data()),
P));
continue;
}
// Okay, add the string we captured to the output vector and move on.
CheckStrings.push_back(CheckString(P,
PatternLoc,
IsCheckNext));
std::swap(NotMatches, CheckStrings.back().NotStrings);
}
if (CheckStrings.empty()) {
errs() << "error: no check strings found with prefix '" << CheckPrefix
<< ":'\n";
return true;
}
if (!NotMatches.empty()) {
errs() << "error: '" << CheckPrefix
<< "-NOT:' not supported after last check line.\n";
return true;
}
return false;
}