Environment Class Reference

Represents (current) binding of variables to a buffer node. More...

#include <environment.h>

Collaboration diagram for Environment:

[legend]

List of all members.

Public Member Functions
	Environment ()
	Constructor.
	Environment (BufferNode *_root)
	Constructor.
virtual	~Environment ()
void	insertNodeBinding (unsigned var, BufferNode *node)
	Inserts (or sets) a new variable with its (current) binding to a BufferNode.
void	print (OutputStream &dos)
	Prints all variables with their (current) binding to a BufferNode.
BufferNode *	getNodeBinding (unsigned var)
	Returns the (current) binding to a BufferNode for the entered variable.
Environment *	clone ()
	Returns a new, independent copy of all variables with their (current) binding to a BufferNode or of this object respectively.
Private Attributes
Env	env
	The underlying map of this object.

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Detailed Description

Represents (current) binding of variables to a buffer node.

Represents (current) binding of variables to a buffer node, which takes therefore a variable and a BufferNode as arguments.

Note:

Variables are internally represented by numbers!

Author:

Michael Schmidt

Gunnar Jehl

Version:

2.1

License:

Software License Agreement (BSD License)

Definition at line 60 of file environment.h.

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Constructor & Destructor Documentation

Environment::Environment

(

)

Constructor.

Constructor - creating object.

Definition at line 38 of file environment.cpp.

Referenced by clone().

Environment::Environment

(

BufferNode *

_root

)

Constructor.

Constructor - creating object for a BufferNode.

Parameters:

[in]

_root

Pointer to a BufferNode object.

Definition at line 41 of file environment.cpp.

References env, and TAGID_ROOT.

Environment::~Environment

(

)

[virtual]

Destructor.

Definition at line 45 of file environment.cpp.

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Member Function Documentation

Environment * Environment::clone

(

)

Returns a new, independent copy of all variables with their (current) binding to a BufferNode or of this object respectively.

Returns a new, independent copy of all variables with their (current) binding to a BufferNode or of this object respectively.

Return values:

Environment*

Pointer to a Environment object.

Definition at line 69 of file environment.cpp.

References env, Environment(), and insertNodeBinding().

Referenced by ForExpression::eval(), and ForExpression::evalSignOffForBinding().

BufferNode * Environment::getNodeBinding

(

unsigned

var

)

Returns the (current) binding to a BufferNode for the entered variable.

Returns the (current) binding to a BufferNode for the entered variable.

Parameters:

[in]

var

Variable for which (current) binding should be obtained.

Return values:

BufferNode*

Pointer to a BufferNode object.

Definition at line 62 of file environment.cpp.

References env.

Referenced by AggregateFunctVarSampExpression::calculateValue(), AggregateFunctVarPopExpression::calculateValue(), AggregateFunctSumExpression::calculateValue(), AggregateFunctStdDevSampExpression::calculateValue(), AggregateFunctStdDevPopExpression::calculateValue(), AggregateFunctMinExpression::calculateValue(), AggregateFunctMedianExpression::calculateValue(), AggregateFunctMaxExpression::calculateValue(), AggregateFunctCountExpression::calculateValue(), AggregateFunctAvgExpression::calculateValue(), VarStepExpression::eval(), VarExpression::eval(), SignOffExpression::eval(), ForExpression::eval(), ExistsCondExpression::evalCond(), VarStepExpression::prepareOperand(), and VarExpression::prepareOperand().

void Environment::insertNodeBinding	(	unsigned	var,
		BufferNode *	node
	)

Inserts (or sets) a new variable with its (current) binding to a BufferNode.

Inserts (or sets) a new variable with its (current) binding to a BufferNode.

Parameters:

[in]	var	Variable for which (current) binding holds.
[in]	node	Pointer to a BufferNode object.

Return values:

void

Definition at line 48 of file environment.cpp.

References env.

Referenced by clone(), ForExpression::eval(), and ForExpression::evalSignOffForBinding().

void Environment::print

(

OutputStream &

dos

)

Prints all variables with their (current) binding to a BufferNode.

Prints all variables with their (current) binding to a BufferNode.

Parameters:

[in]

dos

Pointer to a OutputStream object.

Return values:

void

Definition at line 52 of file environment.cpp.

References env, VarName::getInstance(), VarName::getVarname(), and NEWLINE.

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Member Data Documentation

Env Environment::env [private]

The underlying map of this object.

The underlying map of this object, which maps variables to a BufferNode.

Definition at line 118 of file environment.h.

Referenced by clone(), Environment(), getNodeBinding(), insertNodeBinding(), and print().