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#include <ClhepEvaluator.h>
Public Member Functions | |
| void | clear () |
| access to the dictionary (namespace,name)->value | |
| ClhepEvaluator () | |
| double | eval (const char *expression) |
| evaluations using directly the CLHEP-evaluator | |
| double | eval (const std::string &ns, const std::string &expr) |
| evaluate an expression expr inside the local namespace | |
| bool | isDefined (const std::string &ns, const std::string &name) |
| check whether a variable is already defined or not | |
| void | set (const std::string &name, const std::string &value) |
| filling the clhep-implementation of the dictionary | |
| void | set (const std::string &ns, const std::string &name, const std::string &exprValue) |
| put a new variable named 'namespace:name' into the dictionary of the evaluator | |
| const std::vector< std::string > & | values () const |
| const std::vector< std::string > & | variables () const |
| access to the clhep-implementation of the dictionary variables | |
| ~ClhepEvaluator () | |
Private Member Functions | |
| void | checkname (const std::string &name) const |
| void | prepare (const std::string &ns, const std::string &name, const std::string &exprValue, std::string &nameResult, std::string &valResult) const |
| void | throwex (const std::string &ns, const std::string &name, const std::string &expr, const std::string &reason, int idx=0) const |
Private Attributes | |
| HepTool::Evaluator | evaluator_ |
| std::vector< std::string > | values_ |
| std::vector< std::string > | variables_ |
Definition at line 11 of file ClhepEvaluator.h.
| ClhepEvaluator::ClhepEvaluator | ( | ) |
Definition at line 6 of file ClhepEvaluator.cc.
References evaluator_.
{
// enable standard mathematical funtions
evaluator_.setStdMath();
// set Geant4 compatible units
evaluator_.setSystemOfUnits(1.e+3, 1./1.60217733e-25, 1.e+9, 1./1.60217733e-10,
1.0, 1.0, 1.0);
// set some global vars, which are in fact known by Clhep::SystemOfUnits
// but are NOT set in CLHEP::Evaluator ...
evaluator_.setVariable("mum","1.e-3*mm");
evaluator_.setVariable("fm","1.e-15*meter");
}
| ClhepEvaluator::~ClhepEvaluator | ( | ) |
| void ClhepEvaluator::checkname | ( | const std::string & | name | ) | const [private] |
Definition at line 274 of file ClhepEvaluator.cc.
Referenced by set().
{
// '[' ']' ' ' ':' are forbidden for names and namespaces of parameters
std::string::size_type sz = s.size();
while(sz) {
--sz;
//bool stop = false;
switch (s[sz]) {
case ']':
case '[':
case ' ':
case ':':
case '\n':
case '\t':
// case '.':
case '&':
case '*':
case '+':
case '-':
case '/':
case '^':
std::string e = std::string("ClhepEvaluator ERROR: forbidden character '")
+ s[sz] + std::string("' found in '") + s + std::string("' !");
throw DDException(e);
break;
}
}
}
| void ClhepEvaluator::clear | ( | ) | [virtual] |
access to the dictionary (namespace,name)->value
if not implemented in a sub-class it returns 0 and does nothing to result clear the dictionary of the evaluator
Implements ExprEvalInterface.
Definition at line 141 of file ClhepEvaluator.cc.
References evaluator_, values_, and variables_.
Referenced by ~ClhepEvaluator().
{
// clear the dictionary
evaluator_.clear();
// clear the cache of values & variable-names
variables_.clear();
values_.clear();
}
| double ClhepEvaluator::eval | ( | const std::string & | ns, |
| const std::string & | expr | ||
| ) | [virtual] |
evaluate an expression expr inside the local namespace
Implements ExprEvalInterface.
Definition at line 93 of file ClhepEvaluator.cc.
References gather_cfg::cout, evaluator_, i, prepare(), query::result, and throwex().
Referenced by DDConstant::createConstantsFromEvaluator().
{
// eval does not store std::strings in the values_!
// eval throws if it can't evaluate!
std::string pseudo("(evaluating)");
std::string prepared;
prepare(ns,pseudo,expr, pseudo,prepared);
double result = evaluator_.evaluate(prepared.c_str());
if(evaluator_.status()!=HepTool::Evaluator::OK) {
std::cout << "expr: " << prepared << std::endl;
std::cout << "------";
for (int i=0; i<evaluator_.error_position(); ++i) std::cout << "-";
std::cout << "^" << std::endl;
evaluator_.print_error();
throwex(ns,prepared,expr,"can't evaluate: " + expr + std::string("!"));
}
return result;
}
| double ClhepEvaluator::eval | ( | const char * | expression | ) |
evaluations using directly the CLHEP-evaluator
expression must be an expression compatible with the CLHEP-Evaluator syntax
Definition at line 116 of file ClhepEvaluator.cc.
References gather_cfg::cout, evaluator_, i, query::result, and throwex().
{
double result = evaluator_.evaluate(expression);
if (evaluator_.status()!=HepTool::Evaluator::OK) {
std::cout << "expr: " << expression << std::endl;
std::cout << "------";
for (int i=0; i<evaluator_.error_position(); ++i) std::cout << "-";
std::cout << "^" << std::endl;
evaluator_.print_error();
throwex("",expression,"","can't evaluate: " + std::string(expression) + std::string("!"));
}
return result;
}
| bool ClhepEvaluator::isDefined | ( | const std::string & | ns, |
| const std::string & | name | ||
| ) | [virtual] |
check whether a variable is already defined or not
Implements ExprEvalInterface.
Definition at line 130 of file ClhepEvaluator.cc.
References evaluator_, and prepare().
{
std::string newVar;
std::string newVal;
prepare(ns,name,"0", newVar,newVal);
return evaluator_.findVariable(newVar.c_str());
}
| void ClhepEvaluator::prepare | ( | const std::string & | ns, |
| const std::string & | name, | ||
| const std::string & | exprValue, | ||
| std::string & | nameResult, | ||
| std::string & | valResult | ||
| ) | const [private] |
Definition at line 152 of file ClhepEvaluator.cc.
References mergeVDriftHistosByStation::name, cond::rpcobtemp::temp, and throwex().
Referenced by eval(), isDefined(), and set().
{
static const std::string sep("___"); // separator between ns and name
// SOME SPAGHETTI CODE ...
// break it down into some addional member functions ...
// the name and namespaces are not checked for 'forbidden' symbols like [,],: ...
nameResult = ns + sep + name;
// scan the expression std::string and remove [ ], and insert the current namespace if it's missing
std::string temp;
// 2 pass for simplicity (which is NOT efficient ...)
// pass 1: find variables without namespace, e.g. [abcd], and mark them
// pass 2: remove [ ] & ( exchange ':' with '_' | add the namespace at marked variables )
std::string::size_type sz = exprValue.size();
std::string::size_type idx =0;
bool insideBracket = false;
bool nsFound = false;
int varCount=0; // count the variables from 1,2,3,...
std::vector<int> hasNs(1); // marked[i]=1 ... variable number i has a namespace attached with ':'
while(idx<sz) {
switch(exprValue[idx]) {
case '[':
if (nsFound || insideBracket) { // oops, something went wrong. simply throw!
throwex(ns,name,exprValue,
"found a ':' outside '[..]' , or too many '[' !",idx);
}
insideBracket=true;
++varCount;
break;
case ']':
if (!insideBracket) {
throwex(ns,name,exprValue,"too many ']' !",idx);
}
insideBracket=false;
if (nsFound) {
nsFound=false; // reset
hasNs.push_back(1);
}
else {
hasNs.push_back(0);
}
break;
case ':':
if ( (!insideBracket) || nsFound ) { // oops, a namespace outside [] or a 2nd ':' inside []! !
throwex(ns,name,exprValue,
"found a ':' outside '[..]' , or multiple ':' inside '[..]'",idx);
}
nsFound=true;
break;
default:
;
} // switch
++idx;
} // while(sz)
// status after pass 1 must be: every [ ] is closed and no ':'
if ( insideBracket || nsFound ) {
throwex(ns,name,exprValue,
"'[..]' not closed , or ':' outside of '[..]'",idx);
}
// Pass 2: now remove all '[' ']', replace ':' or add 'ns' + '_'
//sz = exprValue.size();
idx=0;
varCount=0;
//bool ommit = false;
while (idx<sz) {
switch(exprValue[idx]) {
case '[':
++varCount;
if ( !hasNs[varCount] ) {
valResult = valResult + ns + sep;
}
break;
case ']':
break;
case ':':
valResult = valResult + sep;
break;
default:
valResult = valResult + exprValue[idx];
} // switch
++idx;
} // while
}
| void ClhepEvaluator::set | ( | const std::string & | ns, |
| const std::string & | name, | ||
| const std::string & | valueExpr | ||
| ) | [virtual] |
put a new variable named 'namespace:name' into the dictionary of the evaluator
Implements ExprEvalInterface.
Definition at line 43 of file ClhepEvaluator.cc.
References checkname(), gather_cfg::cout, DCOUT_V, dd_exchange_value(), evaluator_, prepare(), throwex(), values_, and variables_.
Referenced by DDStreamer::vars_read().
{
checkname(ns); // fancy characters in ns or name ??
checkname(name);
std::string newVar;
std::string newVal;
prepare(ns,name,exprValue,newVar,newVal);
DCOUT_V('C', "ClhepEvaluator: "
<< " in: " << ns << " " << name << " " << exprValue
<< " pr: " << newVar << " " << newVal);
//set(newVar,newVal);
evaluator_.setVariable(newVar.c_str(), newVal.c_str());
switch(evaluator_.status()) {
case HepTool::Evaluator::WARNING_EXISTING_VARIABLE:
dd_exchange_value(variables_,values_,newVar,newVal);
break;
case HepTool::Evaluator::OK:
case HepTool::Evaluator::WARNING_EXISTING_FUNCTION:
case HepTool::Evaluator::WARNING_BLANK_STRING:
variables_.push_back(newVar);
values_.push_back(newVal);
break;
default:
std::cout << "set-var: ns=" << ns << " nm=" << name << " val=" << exprValue << std::endl;
evaluator_.print_error();
throwex(ns,name,exprValue,"can't set parameter !");
}
}
| void ClhepEvaluator::set | ( | const std::string & | name, |
| const std::string & | value | ||
| ) |
filling the clhep-implementation of the dictionary
Definition at line 72 of file ClhepEvaluator.cc.
References gather_cfg::cout, dd_exchange_value(), evaluator_, throwex(), values_, and variables_.
{
evaluator_.setVariable(n.c_str(),v.c_str());
switch(evaluator_.status()) {
case HepTool::Evaluator::WARNING_EXISTING_VARIABLE:
dd_exchange_value(variables_,values_,n,v);
break;
case HepTool::Evaluator::OK:
case HepTool::Evaluator::WARNING_EXISTING_FUNCTION:
case HepTool::Evaluator::WARNING_BLANK_STRING:
variables_.push_back(n);
values_.push_back(v);
break;
default:
std::cout << "set-varname=" << n << " val=" << v << std::endl;
evaluator_.print_error();
throwex("",n,v,"can't set parameter !");
}
}
| void ClhepEvaluator::throwex | ( | const std::string & | ns, |
| const std::string & | name, | ||
| const std::string & | expr, | ||
| const std::string & | reason, | ||
| int | idx = 0 |
||
| ) | const [private] |
Definition at line 258 of file ClhepEvaluator.cc.
Referenced by eval(), prepare(), and set().
{
std::string er = std::string("ClhepEvaluator ERROR: ") + reason + std::string("\n")
+ std::string(" nmspace=") + ns
+ std::string("\n varname=") + name
+ std::string("\n exp=") + expr
+ std::string("\n at=") + expr.substr(0,idx);
throw DDException(er);
}
| const std::vector<std::string>& ClhepEvaluator::values | ( | ) | const [inline] |
Definition at line 28 of file ClhepEvaluator.h.
References values_.
Referenced by DDConstant::createConstantsFromEvaluator(), and DDStreamer::vars_write().
{ return values_;}
| const std::vector<std::string>& ClhepEvaluator::variables | ( | ) | const [inline] |
access to the clhep-implementation of the dictionary variables
Definition at line 27 of file ClhepEvaluator.h.
References variables_.
Referenced by DDConstant::createConstantsFromEvaluator(), and DDStreamer::vars_write().
{ return variables_;}
HepTool::Evaluator ClhepEvaluator::evaluator_ [private] |
Definition at line 54 of file ClhepEvaluator.h.
Referenced by clear(), ClhepEvaluator(), eval(), isDefined(), and set().
std::vector<std::string> ClhepEvaluator::values_ [private] |
Definition at line 56 of file ClhepEvaluator.h.
std::vector<std::string> ClhepEvaluator::variables_ [private] |
Definition at line 55 of file ClhepEvaluator.h.
Referenced by clear(), set(), and variables().
1.7.3