/// @brief Scans YAML tokens from a MemoryBuffer.
class Scanner {
public:
- Scanner(const StringRef Input, SourceMgr &SM);
- Scanner(MemoryBuffer *Buffer, SourceMgr &SM_);
+ Scanner(StringRef Input, SourceMgr &SM);
+ Scanner(MemoryBufferRef Buffer, SourceMgr &SM_);
/// @brief Parse the next token and return it without popping it.
Token &peekNext();
}
private:
+ void init(MemoryBufferRef Buffer);
+
StringRef currentInput() {
return StringRef(Current, End - Current);
}
/// sequence of ns-uri-char.
StringRef scan_ns_uri_char();
- /// @brief Scan ns-plain-one-line[133] starting at \a Cur.
- StringRef scan_ns_plain_one_line();
-
/// @brief Consume a minimal well-formed code unit subsequence starting at
/// \a Cur. Return false if it is not the same Unicode scalar value as
/// \a Expected. This updates \a Column.
SourceMgr &SM;
/// @brief The original input.
- MemoryBuffer *InputBuffer;
+ MemoryBufferRef InputBuffer;
/// @brief The current position of the scanner.
StringRef::iterator Current;
return EscapedInput;
}
-Scanner::Scanner(StringRef Input, SourceMgr &sm)
- : SM(sm)
- , Indent(-1)
- , Column(0)
- , Line(0)
- , FlowLevel(0)
- , IsStartOfStream(true)
- , IsSimpleKeyAllowed(true)
- , Failed(false) {
- InputBuffer = MemoryBuffer::getMemBuffer(Input, "YAML");
- SM.AddNewSourceBuffer(InputBuffer, SMLoc());
- Current = InputBuffer->getBufferStart();
- End = InputBuffer->getBufferEnd();
-}
-
-Scanner::Scanner(MemoryBuffer *Buffer, SourceMgr &SM_)
- : SM(SM_)
- , InputBuffer(Buffer)
- , Current(InputBuffer->getBufferStart())
- , End(InputBuffer->getBufferEnd())
- , Indent(-1)
- , Column(0)
- , Line(0)
- , FlowLevel(0)
- , IsStartOfStream(true)
- , IsSimpleKeyAllowed(true)
- , Failed(false) {
- SM.AddNewSourceBuffer(InputBuffer, SMLoc());
+Scanner::Scanner(StringRef Input, SourceMgr &sm) : SM(sm) {
+ init(MemoryBufferRef(Input, "YAML"));
+}
+
+Scanner::Scanner(MemoryBufferRef Buffer, SourceMgr &SM_) : SM(SM_) {
+ init(Buffer);
+}
+
+void Scanner::init(MemoryBufferRef Buffer) {
+ InputBuffer = Buffer;
+ Current = InputBuffer.getBufferStart();
+ End = InputBuffer.getBufferEnd();
+ Indent = -1;
+ Column = 0;
+ Line = 0;
+ FlowLevel = 0;
+ IsStartOfStream = true;
+ IsSimpleKeyAllowed = true;
+ Failed = false;
+ std::unique_ptr<MemoryBuffer> InputBufferOwner =
+ MemoryBuffer::getMemBuffer(Buffer);
+ SM.AddNewSourceBuffer(std::move(InputBufferOwner), SMLoc());
}
Token &Scanner::peekNext() {
return StringRef(Start, Current - Start);
}
-StringRef Scanner::scan_ns_plain_one_line() {
- StringRef::iterator start = Current;
- // The first character must already be verified.
- ++Current;
- while (true) {
- if (Current == End) {
- break;
- } else if (*Current == ':') {
- // Check if the next character is a ns-char.
- if (Current + 1 == End)
- break;
- StringRef::iterator i = skip_ns_char(Current + 1);
- if (Current + 1 != i) {
- Current = i;
- Column += 2; // Consume both the ':' and ns-char.
- } else
- break;
- } else if (*Current == '#') {
- // Check if the previous character was a ns-char.
- // The & 0x80 check is to check for the trailing byte of a utf-8
- if (*(Current - 1) & 0x80 || skip_ns_char(Current - 1) == Current) {
- ++Current;
- ++Column;
- } else
- break;
- } else {
- StringRef::iterator i = skip_nb_char(Current);
- if (i == Current)
- break;
- Current = i;
- ++Column;
- }
- }
- return StringRef(start, Current - start);
-}
-
bool Scanner::consume(uint32_t Expected) {
if (Expected >= 0x80)
report_fatal_error("Not dealing with this yet");
Stream::Stream(StringRef Input, SourceMgr &SM)
: scanner(new Scanner(Input, SM)), CurrentDoc() {}
-Stream::Stream(MemoryBuffer *InputBuffer, SourceMgr &SM)
+Stream::Stream(MemoryBufferRef InputBuffer, SourceMgr &SM)
: scanner(new Scanner(InputBuffer, SM)), CurrentDoc() {}
Stream::~Stream() {}
void MappingNode::increment() {
if (failed()) {
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
return;
}
if (CurrentEntry) {
CurrentEntry->skip();
if (Type == MT_Inline) {
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
return;
}
}
case Token::TK_BlockEnd:
getNext();
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
break;
default:
setError("Unexpected token. Expected Key or Block End", T);
case Token::TK_Error:
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
}
} else {
switch (T.Kind) {
case Token::TK_Error:
// Set this to end iterator.
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
break;
default:
setError( "Unexpected token. Expected Key, Flow Entry, or Flow "
"Mapping End."
, T);
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
}
}
}
void SequenceNode::increment() {
if (failed()) {
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
return;
}
if (CurrentEntry)
case Token::TK_BlockEntry:
getNext();
CurrentEntry = parseBlockNode();
- if (CurrentEntry == 0) { // An error occurred.
+ if (!CurrentEntry) { // An error occurred.
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
}
break;
case Token::TK_BlockEnd:
getNext();
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
break;
default:
setError( "Unexpected token. Expected Block Entry or Block End."
, T);
case Token::TK_Error:
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
}
} else if (SeqType == ST_Indentless) {
switch (T.Kind) {
case Token::TK_BlockEntry:
getNext();
CurrentEntry = parseBlockNode();
- if (CurrentEntry == 0) { // An error occurred.
+ if (!CurrentEntry) { // An error occurred.
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
}
break;
default:
case Token::TK_Error:
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
}
} else if (SeqType == ST_Flow) {
switch (T.Kind) {
case Token::TK_Error:
// Set this to end iterator.
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
break;
case Token::TK_StreamEnd:
case Token::TK_DocumentEnd:
setError("Could not find closing ]!", T);
// Set this to end iterator.
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
break;
default:
if (!WasPreviousTokenFlowEntry) {
setError("Expected , between entries!", T);
IsAtEnd = true;
- CurrentEntry = 0;
+ CurrentEntry = nullptr;
break;
}
// Otherwise it must be a flow entry.
}
}
-Document::Document(Stream &S) : stream(S), Root(0) {
+Document::Document(Stream &S) : stream(S), Root(nullptr) {
// Tag maps starts with two default mappings.
TagMap["!"] = "!";
TagMap["!!"] = "tag:yaml.org,2002:";
case Token::TK_Anchor:
if (AnchorInfo.Kind == Token::TK_Anchor) {
setError("Already encountered an anchor for this node!", T);
- return 0;
+ return nullptr;
}
AnchorInfo = getNext(); // Consume TK_Anchor.
T = peekNext();
case Token::TK_Tag:
if (TagInfo.Kind == Token::TK_Tag) {
setError("Already encountered a tag for this node!", T);
- return 0;
+ return nullptr;
}
TagInfo = getNext(); // Consume TK_Tag.
T = peekNext();
// !!null null.
return new (NodeAllocator) NullNode(stream.CurrentDoc);
case Token::TK_Error:
- return 0;
+ return nullptr;
}
llvm_unreachable("Control flow shouldn't reach here.");
- return 0;
+ return nullptr;
}
bool Document::parseDirectives() {
projects / oota-llvm.git / blobdiff