Class to parse a string and build a Expression tree representing the mathematical value of that string

Source:

parser.h:28

Author:

jhc7@duke.edu

Version:

unknown

Entity	Type	Scope	Short Description
~Parser	destructor	public	automatically generated
Parser	constructor	public	Parser() - default constructor for a Parser
Parser	constructor	public	automatically generated
getNumParsed	method	public	this function returns the number of expressions that have already been parsed.
operator =	operator	public	automatically generated
parseExpression	method	public	This function is the main function that will be used to interact with a parser.
updateCurrent	method	public	Takes what the user entered and the results of that input and updates the 'current' variable if the input was neither a history command, a comment, a variable assignment, or evaluating a variable

automatically generated

Source:

parser.h

Code:

public ~ Parser ( )

Parser() - default constructor for a Parser

Source:

parser.h:34

Code:

public Parser (

)

automatically generated

Source:

parser.h

Code:

public Parser (

const Parser & )

this function returns the number of expressions that have already been parsed.

This is needed for displaying the line number on the prompts for the user

Source:

parser.h:50

Code:

public int getNumParsed (

)

automatically generated

Source:

parser.h

Code:

public Parser & operator = (

const Parser & )

This function is the main function that will be used to interact with a parser.

it uses private helper functions in order to validate input and to construct a expression tree

Source:

parser.h:42

Code:

public Expression * parseExpression (

string exp )

Takes what the user entered and the results of that input and updates the 'current' variable if the input was neither a history command, a comment, a variable assignment, or evaluating a variable

Source:

parser.h:58

Code:

public void updateCurrent (	string exp ,
	Expression * result )