Class ParenthesisedExpressionReader

java.lang.Object

ch.andre601.expressionparser.parsers.ValueReader

ch.andre601.expressionparser.parsers.ParenthesisedExpressionReader

public class ParenthesisedExpressionReader
extends ValueReader

ValueReader converting a set of token into an ExpressionTemplate if the first token is the same as the first token provided and the follow-up tokens containing the second provided token.

Constructor Summary

Constructors

Constructor	Description
ParenthesisedExpressionReader(Token openingParenthesis, Token closingParenthesis)	Sets the tokens to look for when parsing.

Method Summary

Modifier and Type	Method	Description
ExpressionTemplate	read(ExpressionTemplateParser parser, List<Token> tokens, ParseWarnCollector collector)	Takes the first Token from the token list and checks, if it is the set opening parenthesis Token.

Methods inherited from class java.lang.Object

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

Constructor Details

ParenthesisedExpressionReader

public ParenthesisedExpressionReader(Token openingParenthesis,
 Token closingParenthesis)

Sets the tokens to look for when parsing.

Parameters:

openingParenthesis - First token to look for representing an opening parenthesis.

closingParenthesis - Second token to look for representing a closing parenthesis.

Method Details

read

public ExpressionTemplate read(ExpressionTemplateParser parser,
 List<Token> tokens,
 ParseWarnCollector collector)

Takes the first Token from the token list and checks, if it is the set opening parenthesis Token.
If true, iterates through the remaining Token list until a closing parenthesis Token matching the one set is found, or the end of the list is reached and returns a with the retrieved values.
May return null if no opening parenthesis Token matching the one set is found.

Specified by:

read in class ValueReader

Parameters:

parser - ExpressionTemplateParser instance to use. The default ExpressionTemplateParser provides itself here.

tokens - List of tokens to parse into an ExpressionTemplate.

collector - ParseWarnCollector instance to use.

Returns:

Possibly null ExpressionTemplate.