tracedvar.cc
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上传日期:2015-12-11
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- /*
- * Copyright (c) 1997 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the Daedalus Research
- * Group at the University of California Berkeley.
- * 4. Neither the name of the University nor of the Laboratory may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * Contributed by Giao Nguyen, http://daedalus.cs.berkeley.edu/~gnguyen
- */
- #include "tclcl.h"
- #include "tclcl-internal.h"
- #include "tracedvar.h"
- #ifdef STDC_HEADERS
- #include <stdlib.h> // for abort() on redhat 7.0beta
- #endif /* STDC_HEADERS */
- #ifdef TCLCL_USE_STREAM
- #include <strstream.h>
- enum {
- ios__number = ios::basefield + ios::floatfield,
- ios__fields = ios::adjustfield + ios::basefield + ios::floatfield,
- };
- void TracedVar::format(ostrstream& os)
- {
- // format adjustfield and number field only if iosMask is set
- if (iosMask_ & ios::adjustfield)
- os.setf(iosMask_, ios::adjustfield);
- if (iosMask_ & ios__number)
- os.setf(iosMask_, ios__number);
- os.setf(iosMask_, ~ios__fields);
- }
- void TracedVar::format(ostrstream&)
- {
- }
- #endif
- TracedVar::TracedVar() : name_(""), owner_(0), tracer_(0),
- #ifdef TCLCL_USE_STREAM
- iosWidth_(0), iosPrecision_(0), iosMask_(0),
- #endif /* TCLCL_USE_STREAM */
- next_(0)
- {
- }
- TracedVar::TracedVar(const char* name) : name_(name), owner_(0), tracer_(0),
- #ifdef TCLCL_USE_STREAM
- iosWidth_(0), iosPrecision_(0), iosMask_(0),
- #endif /* TCLCL_USE_STREAM */
- next_(0)
- {
- }
- void TracedInt::assign(int newval)
- {
- // if value changes, set new value and call tracer if exist
- if (val_ == newval)
- return;
- val_ = newval;
- if (tracer_)
- tracer_->trace(this);
- }
- char* TracedInt::value(char* buf, int buflen)
- {
- if (buf == 0)
- return 0;
- #ifdef TCLCL_USE_STREAM
- ostrstream ost(buf, 16 + iosWidth_);
- format(ost);
- ost.width(iosWidth_);
- ost << val_;
- #else
- // sprintf(buf, "%*d", iosWidth_, val_);
- if (-1 == snprintf(buf, buflen, "%d", val_))
- abort();
- #endif
- return buf;
- }
- void TracedDouble::assign(double newval)
- {
- // if value changes, set new value and call tracer if exist
- if (val_ == newval)
- return;
- val_ = newval;
- if (tracer_)
- tracer_->trace(this);
- }
- char* TracedDouble::value(char* buf, int buflen)
- {
- if (buf == 0)
- return 0;
- #ifdef TCLCL_USE_STREAM
- ostrstream ost(buf, 16 + iosWidth_);
- format(ost);
- ost.precision(iosPrecision_);
- ost << val_;
- #else
- // sprintf(buf, "%*.*f", iosWidth_, iosPrecision_, val_);
- if (-1 == snprintf(buf, buflen, "%g", val_))
- abort();
- #endif
- return buf;
- }