tracedvar.h
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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
- */
- #ifndef tracedvar_h
- #define tracedvar_h
- /*
- * If TCLCL_USE_STREAM is defined, we pick up
- * the ability to set the formatting precision/width
- * and use streams.
- * This is not compiled in by default since ns doesn't use streams.
- */
- class ostrstream;
- class TclObject;
- class TracedVar {
- public:
- TracedVar();
- virtual ~TracedVar() {}
- virtual char* value(char* buf, int buflen) = 0;
- inline const char* name() { return (name_); }
- inline void name(const char* name) { name_ = name; }
- inline TclObject* owner() { return owner_; }
- inline void owner(TclObject* o) { owner_ = o; }
- inline TclObject* tracer() { return tracer_; }
- inline void tracer(TclObject* o) { tracer_ = o; }
- #ifdef TCLCL_USE_STREAM
- inline void width(int n) { iosWidth_ = n; }
- inline short iosMask() { return iosMask_; }
- inline void setf(short val) { iosMask_ |= val; }
- inline void setf(short val, short mask) {
- iosMask_ = (iosMask_ & ~mask) | (val & mask);
- }
- #endif /* TCLCL_USE_STREAM */
- protected:
- TracedVar(const char* name);
- #ifdef TCLCL_USE_STREAM
- inline void format(ostrstream& os);
- #endif /* TCLCL_USE_STREAM */
- const char* name_; // name of the variable
- TclObject* owner_; // the object that owns this variable
- TclObject* tracer_; // callback when the variable is changed
- #ifdef TCLCL_USE_STREAM
- unsigned char iosWidth_; // ios format width
- unsigned char iosPrecision_; // ios format precision
- short iosMask_; // ios flag for setf
- #endif /* TCLCL_USE_STREAM */
- public:
- TracedVar* next_; // to make a link list
- };
- class TracedInt : public TracedVar {
- public:
- TracedInt() : TracedVar() {}
- TracedInt(int v) : TracedVar(), val_(v) {}
- virtual ~TracedInt() {}
- // implicit conversion operators
- inline operator int() { return val_; }
- // unary operators
- inline int operator++() { assign(val_ + 1); return val_; }
- inline int operator--() { assign(val_ - 1); return val_; }
- inline int operator++(int) {
- int v = val_;
- assign(v + 1);
- return v;
- }
- inline int operator--(int) {
- int v = val_;
- assign(v - 1);
- return v;
- }
- // assignment operators
- inline TracedInt& operator=(const TracedInt& v) {
- assign(v.val_);
- return (*this);
- }
- inline int operator=(int v) { assign(v); return val_; }
- inline int operator+=(int v) { return operator=(val_ + v); }
- inline int operator-=(int v) { return operator=(val_ - v); }
- inline int operator*=(int v) { return operator=(val_ * v); }
- inline int operator/=(int v) { return operator=(val_ / v); }
- inline int operator%=(int v) { return operator=(val_ % v); }
- inline int operator<<=(int v) { return operator=(val_ << v); }
- inline int operator>>=(int v) { return operator=(val_ >> v); }
- inline int operator&=(int v) { return operator=(val_ & v); }
- inline int operator|=(int v) { return operator=(val_ | v); }
- inline int operator^=(int v) { return operator=(val_ ^ v); }
- virtual char* value(char* buf, int buflen);
- protected:
- virtual void assign(const int newval);
- int val_; // value stored by this trace variable
- };
- class TracedDouble : public TracedVar {
- public:
- TracedDouble() : TracedVar() {}
- TracedDouble(double v) : TracedVar(), val_(v) {
- #ifdef TCLCL_USE_STREAM
- iosPrecision_ = 6;
- #endif /* TCLCL_USE_STREAM */
- }
- virtual ~TracedDouble() {}
- inline operator double() { return val_; }
- inline double operator++() { assign(val_ + 1); return val_; }
- inline double operator--() { assign(val_ - 1); return val_; }
- inline double operator++(int) {
- double v = val_;
- assign(v + 1);
- return v;
- }
- inline double operator--(int) {
- double v = val_;
- assign(v - 1);
- return v;
- }
- inline TracedDouble& operator=(const TracedDouble& v) {
- assign(v.val_);
- return (*this);
- }
- inline double operator=(double v) { assign(v); return val_; }
- inline double operator+=(double v) { return operator=(val_ + v); }
- inline double operator-=(double v) { return operator=(val_ - v); }
- inline double operator*=(double v) { return operator=(val_ * v); }
- inline double operator/=(double v) { return operator=(val_ / v); }
- #ifdef TCLCL_USE_STREAM
- inline void precision(int n) { iosPrecision_ = n; }
- #endif /* TCLCL_USE_STREAM */
- virtual char* value(char* buf, int buflen);
- protected:
- virtual void assign(const double newval);
- double val_; // value stored by this trace variable
- };
- #endif