LLVM: lib/Support/FormattedStream.cpp Source File (original) (raw)
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18#include
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20using namespace llvm;
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26void formatted_raw_ostream::UpdatePosition(const char *Ptr, size_t Size) {
27 unsigned &Column = Position.first;
28 unsigned &Line = Position.second;
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30 auto ProcessUTF8CodePoint = [&Line, &Column](StringRef CP) {
33 Column += Width;
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36 if (CP.size() > 1)
37 return;
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39 switch (CP[0]) {
40 case '\n':
42 [[fallthrough]];
43 case '\r':
44 Column = 0;
45 break;
46 case '\t':
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48 Column += (8 - (Column & 0x7)) & 0x7;
49 break;
50 }
51 };
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55 if (PartialUTF8Char.size()) {
56 size_t BytesFromBuffer =
58 if (Size < BytesFromBuffer) {
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61 PartialUTF8Char.append(StringRef(Ptr, Size));
62 return;
63 } else {
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67 PartialUTF8Char.append(StringRef(Ptr, BytesFromBuffer));
68 ProcessUTF8CodePoint(PartialUTF8Char);
69 PartialUTF8Char.clear();
70 Ptr += BytesFromBuffer;
71 Size -= BytesFromBuffer;
72 }
73 }
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75
76 unsigned NumBytes;
77 for (const char *End = Ptr + Size; Ptr < End; Ptr += NumBytes) {
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79 if (*Ptr >= 0x20 && *Ptr <= 0x7e) {
80 NumBytes = 1;
81 ++Column;
82 continue;
83 }
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92 if ((unsigned)(End - Ptr) < NumBytes) {
93 PartialUTF8Char = StringRef(Ptr, End - Ptr);
94 return;
95 }
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97 ProcessUTF8CodePoint(StringRef(Ptr, NumBytes));
98 }
99}
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103void formatted_raw_ostream::ComputePosition(const char *Ptr, size_t Size) {
104 if (DisableScan)
105 return;
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110 if (Ptr <= Scanned && Scanned <= Ptr + Size)
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113 UpdatePosition(Scanned, Size - (Scanned - Ptr));
114 else
115 UpdatePosition(Ptr, Size);
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118 Scanned = Ptr + Size;
119}
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131 return *this;
132}
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134void formatted_raw_ostream::write_impl(const char *Ptr, size_t Size) {
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136 ComputePosition(Ptr, Size);
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143 Scanned = nullptr;
144}
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formatted_raw_ostream - A raw_ostream that wraps another one and keeps track of line and column posit...
formatted_raw_ostream & PadToColumn(unsigned NewCol)
PadToColumn - Align the output to some column number.
Definition FormattedStream.cpp:125
formatted_raw_ostream(raw_ostream &Stream)
formatted_raw_ostream - Open the specified file for writing.
raw_ostream & write(unsigned char C)
raw_ostream & indent(unsigned NumSpaces)
indent - Insert 'NumSpaces' spaces.
const char * getBufferStart() const
Return the beginning of the current stream buffer, or 0 if the stream is unbuffered.
size_t GetNumBytesInBuffer() const
@ ErrorNonPrintableCharacter
LLVM_ABI int columnWidthUTF8(StringRef Text)
Gets the number of positions the UTF8-encoded Text is likely to occupy when output on a terminal ("ch...
This is an optimization pass for GlobalISel generic memory operations.
LLVM_ABI formatted_raw_ostream & fdbgs()
fdbgs() - This returns a reference to a formatted_raw_ostream for debug output.
Definition FormattedStream.cpp:162
LLVM_ABI raw_fd_ostream & outs()
This returns a reference to a raw_fd_ostream for standard output.
LLVM_ABI unsigned getNumBytesForUTF8(UTF8 firstByte)
LLVM_ABI formatted_raw_ostream & fouts()
fouts() - This returns a reference to a formatted_raw_ostream for standard output.
Definition FormattedStream.cpp:148
LLVM_ABI raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
LLVM_ABI raw_fd_ostream & errs()
This returns a reference to a raw_ostream for standard error.
LLVM_ABI formatted_raw_ostream & ferrs()
ferrs() - This returns a reference to a formatted_raw_ostream for standard error.
Definition FormattedStream.cpp:155