Package org.pipservices3.expressions.calculator.parsers

Class ExpressionParser

java.lang.Object

org.pipservices3.expressions.calculator.parsers.ExpressionParser

public class ExpressionParser
extends Object

Implements an expression parser class.

Constructor Summary

Constructors

Constructor	Description
ExpressionParser()

Method Summary

Modifier and Type	Method	Description
void	clear()	Clears parsing results.
String	getExpression()	The expression string.
List<ExpressionToken>	getInitialTokens()	The list of original expression tokens.
List<Token>	getOriginalTokens()
List<ExpressionToken>	getResultTokens()	The list of parsed expression tokens.
List<String>	getVariableNames()	The list of found variable names.
void	parseString(String expression)	Sets a new expression string and parses it into internal byte code.
void	parseTokens(List<Token> tokens)
void	setExpression(String value)	The expression string.
void	setOriginalTokens(List<Token> value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ExpressionParser

public ExpressionParser()
                 throws Exception

Throws:

Exception

Method Details

getExpression

public String getExpression()

The expression string.

setExpression

public void setExpression(String value)
                   throws Exception

The expression string.

Throws:

Exception

getOriginalTokens

public List<Token> getOriginalTokens()

setOriginalTokens

public void setOriginalTokens(List<Token> value)
                       throws SyntaxException

Throws:

SyntaxException

getInitialTokens

public List<ExpressionToken> getInitialTokens()

The list of original expression tokens.

getResultTokens

public List<ExpressionToken> getResultTokens()

The list of parsed expression tokens.

getVariableNames

public List<String> getVariableNames()

The list of found variable names.

parseString

public void parseString(String expression)
                 throws Exception

Sets a new expression string and parses it into internal byte code.

Parameters:

expression - A new expression string.

Throws:

Exception

parseTokens

public void parseTokens(List<Token> tokens)
                 throws SyntaxException

Throws:

SyntaxException

clear

public void clear()

Clears parsing results.