crombie::LoadTree::Tree Class Reference

Class that holds a loaded tree from a file. More...

#include <LoadTree.h>

Public Member Functions
template<typename... Args>
	Tree (const std::string &infile, Args... args)
	Constructor of a loaded tree. More...
	~Tree ()
template<typename C >
C *	get (const std::string &name)
	Get a bare pointer to a TObject inside of this file. More...
bool	next ()
	Loads the next event into memory and evaluates all of the formulas. More...
double &	result (const std::string &expr)
	Get a reference to the result for a given formula. More...

Private Attributes
TFile *	file
	The TFile that is being read. More...
Formulas	forms
	Holds formulas initialized with. More...
long long	ientry {0}
	Which entry are we on. More...
long long	nentries
	Total number of events in the tree. More...
TTree *	tree
	Holds the pointer to the tree. More...

Detailed Description

Class that holds a loaded tree from a file.

The tree name is given in the environment variable tree, and defaults to "events".

Definition at line 71 of file LoadTree.h.

Constructor & Destructor Documentation

Tree()

template<typename... Args>

crombie::LoadTree::Tree::Tree	(	const std::string &	infile,
		Args...	args
	)

Constructor of a loaded tree.

Note that copy and move constructors won't work because of the TFile member.

Parameters

infile	is the name of the input file to read
args	is a variable number of arguments that can be of type std::string or crombie::Types::strings>.

Definition at line 137 of file LoadTree.h.

References crombie::LoadTree::Formulas::add(), crombie::Misc::env(), file, forms, nentries, crombie::LoadTree::rootlock, and tree.

~Tree()

crombie::LoadTree::Tree::~Tree ( )

inline

Definition at line 79 of file LoadTree.h.

References sushi::file.

Member Function Documentation

get()

template<typename C >

C * crombie::LoadTree::Tree::get

(

const std::string &

name

)

Get a bare pointer to a TObject inside of this file.

Parameters

C	is the type of pointer you would like to get
name	is the name of the object, searched for with TFile::Get

Definition at line 164 of file LoadTree.h.

References file.

next()

bool crombie::LoadTree::Tree::next

(

)

Loads the next event into memory and evaluates all of the formulas.

Definition at line 156 of file LoadTree.h.

References crombie::LoadTree::Formulas::eval(), forms, ientry, nentries, and tree.

result()

double& crombie::LoadTree::Tree::result ( const std::string &  expr )

inline

Get a reference to the result for a given formula.

Definition at line 85 of file LoadTree.h.

References crombie::LoadTree::Formulas::forms.

Referenced by crombie::EventDump::SingleFile().

Member Data Documentation

file

TFile* crombie::LoadTree::Tree::file

private

The TFile that is being read.

Definition at line 95 of file LoadTree.h.

Referenced by get(), and Tree().

forms

Formulas crombie::LoadTree::Tree::forms

private

Holds formulas initialized with.

Definition at line 99 of file LoadTree.h.

Referenced by next(), and Tree().

ientry

long long crombie::LoadTree::Tree::ientry {0}

private

Which entry are we on.

Definition at line 98 of file LoadTree.h.

Referenced by next().

nentries

long long crombie::LoadTree::Tree::nentries

private

Total number of events in the tree.

Definition at line 97 of file LoadTree.h.

Referenced by next(), and Tree().

tree

TTree* crombie::LoadTree::Tree::tree

private

Holds the pointer to the tree.

Definition at line 96 of file LoadTree.h.

Referenced by next(), and Tree().

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The documentation for this class was generated from the following file:

• LoadTree.h