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ENH: Add assignment operator to KWSys RegularExpression.

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This commit is contained in:
Brad King 2008-05-16 11:06:18 -04:00
parent b18b370aab
commit f43748e1dd
2 changed files with 37 additions and 0 deletions
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32
Source/kwsys/RegularExpression.cxx
View File

@ -74,6 +74,38 @@ RegularExpression::RegularExpression (const RegularExpression& rxp) {
this->regmlen = rxp.regmlen; // Copy remaining private data this->regmlen = rxp.regmlen; // Copy remaining private data
} }
// operator= -- Copies the given regular expression.
RegularExpression& RegularExpression::operator= (const RegularExpression& rxp)
{
if ( !rxp.program )
{
this->program = 0;
return *this;
}
int ind;
this->progsize = rxp.progsize; // Copy regular expression size
this->program = new char[this->progsize]; // Allocate storage
for(ind=this->progsize; ind-- != 0;) // Copy regular expresion
this->program[ind] = rxp.program[ind];
this->startp[0] = rxp.startp[0]; // Copy pointers into last
this->endp[0] = rxp.endp[0]; // Successful "find" operation
this->regmust = rxp.regmust; // Copy field
if (rxp.regmust != 0) {
char* dum = rxp.program;
ind = 0;
while (dum != rxp.regmust) {
++dum;
++ind;
}
this->regmust = this->program + ind;
}
this->regstart = rxp.regstart; // Copy starting index
this->reganch = rxp.reganch; // Copy remaining private data
this->regmlen = rxp.regmlen; // Copy remaining private data
return *this;
}
// operator== -- Returns true if two regular expressions have the same // operator== -- Returns true if two regular expressions have the same
// compiled program for pattern matching. // compiled program for pattern matching.
bool RegularExpression::operator== (const RegularExpression& rxp) const { bool RegularExpression::operator== (const RegularExpression& rxp) const {

5
Source/kwsys/RegularExpression.hxx.in
View File

@ -233,6 +233,11 @@ public:
*/ */
inline kwsys_stl::string::size_type end() const; inline kwsys_stl::string::size_type end() const;
/**
* Copy the given regular expression.
*/
RegularExpression& operator= (const RegularExpression& rxp);
/** /**
* Returns true if two regular expressions have the same * Returns true if two regular expressions have the same
* compiled program for pattern matching. * compiled program for pattern matching.