diff options
Diffstat (limited to 'lib/Support')
-rw-r--r-- | lib/Support/FormattedStream.cpp | 99 |
1 files changed, 41 insertions, 58 deletions
diff --git a/lib/Support/FormattedStream.cpp b/lib/Support/FormattedStream.cpp index d471d53..df91641 100644 --- a/lib/Support/FormattedStream.cpp +++ b/lib/Support/FormattedStream.cpp @@ -1,74 +1,57 @@ -//===-- llvm/CodeGen/AsmStream.cpp - AsmStream Framework --------*- C++ -*-===// +//===-- llvm/Support/FormattedStream.cpp - Formatted streams ----*- C++ -*-===// // // The LLVM Compiler Infrastructure // -// This file was developed by the LLVM research group and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // -// This file contains instantiations of "standard" AsmOStreams. +// This file contains the implementation of formatted_raw_ostream and +// friends. // //===----------------------------------------------------------------------===// #include "llvm/Support/FormattedStream.h" -namespace llvm { - /// ComputeColumn - Examine the current output and figure out which - /// column we end up in after output. - /// - void formatted_raw_ostream::ComputeColumn(const char *Ptr, unsigned Size) - { - // Keep track of the current column by scanning the string for - // special characters - - // Find the last newline. This is our column start. If there - // is no newline, start with the current column. - const char *nlpos = NULL; - for (const char *pos = Ptr + Size, *epos = Ptr; pos > epos; --pos) { - if (*(pos-1) == '\n') { - nlpos = pos-1; - // The newline will be counted, setting this to zero. We - // need to do it this way in case nlpos is Ptr. - Column = -1; - break; - } - } - - if (nlpos == NULL) { - nlpos = Ptr; - } - - // Walk through looking for tabs and advance column as appropriate - for (const char *pos = nlpos, *epos = Ptr + Size; pos != epos; ++pos) { - ++Column; - if (*pos == '\t') { - // Advance to next tab stop (every eight characters) - Column += ((8 - (Column & 0x7)) & 0x7); - assert(!(Column & 0x3) && "Column out of alignment"); - } - } +using namespace llvm; + +/// ComputeColumn - Examine the current output and figure out which +/// column we end up in after output. +/// +void formatted_raw_ostream::ComputeColumn(const char *Ptr, unsigned Size) +{ + // Keep track of the current column by scanning the string for + // special characters + + for (const char *epos = Ptr + Size; Ptr != epos; ++Ptr) { + ++Column; + if (*Ptr == '\n' || *Ptr == '\r') + Column = 0; + else if (*Ptr == '\t') + Column += (8 - (Column & 0x7)) & 0x7; } +} - /// PadToColumn - Align the output to some column number - /// - /// \param NewCol - The column to move to - /// \param MinPad - The minimum space to give after the most recent - /// I/O, even if the current column + minpad > newcol - /// - void formatted_raw_ostream::PadToColumn(unsigned NewCol, unsigned MinPad) - { - flush(); - - // Output spaces until we reach the desired column - unsigned num = NewCol - Column; - if (NewCol < Column || num < MinPad) { - num = MinPad; - } +/// PadToColumn - Align the output to some column number. +/// +/// \param NewCol - The column to move to. +/// \param MinPad - The minimum space to give after the most recent +/// I/O, even if the current column + minpad > newcol. +/// +void formatted_raw_ostream::PadToColumn(unsigned NewCol, unsigned MinPad) +{ + flush(); + + // Output spaces until we reach the desired column. + unsigned num = NewCol - Column; + if (NewCol < Column || num < MinPad) { + num = MinPad; + } - // TODO: Write a whole string at a time - while (num-- > 0) { - write(' '); - } + // TODO: Write a whole string at a time. + while (num-- > 0) { + write(' '); } } + |