Package com.scriptbasic.lexer.elements

Class MultiCharacter

java.lang.Object

com.scriptbasic.lexer.elements.AbstractElementAnalyzer

com.scriptbasic.lexer.elements.MultiCharacter

All Implemented Interfaces:

LexicalElementAnalyzer, ScriptBasicKeyWords

public class MultiCharacter
extends AbstractElementAnalyzer
implements ScriptBasicKeyWords

Field Summary

Fields inherited from interface com.scriptbasic.interfaces.ScriptBasicKeyWords

BASIC_KEYWORDS, BASIC_OPERATOR_LEXEME_MAX_LENGTH, BASIC_OPERATORS, KEYWORD_AND, KEYWORD_AS, KEYWORD_CALL, KEYWORD_CASE, KEYWORD_DIV, KEYWORD_ELSE, KEYWORD_ELSEIF, KEYWORD_END, KEYWORD_ENDIF, KEYWORD_ENDSUB, KEYWORD_FALSE, KEYWORD_FOR, KEYWORD_FROM, KEYWORD_GLOBAL, KEYWORD_IF, KEYWORD_IS, KEYWORD_LET, KEYWORD_LOCAL, KEYWORD_METHOD, KEYWORD_NEXT, KEYWORD_NOT, KEYWORD_OR, KEYWORD_PRINT, KEYWORD_REM, KEYWORD_REPEAT, KEYWORD_RETURN, KEYWORD_SELECT, KEYWORD_SENTENCE, KEYWORD_STEP, KEYWORD_SUB, KEYWORD_THEN, KEYWORD_TO, KEYWORD_TRUE, KEYWORD_UNTIL, KEYWORD_USE, KEYWORD_WEND, KEYWORD_WHILE, OPERATOR_AMPERSAND, OPERATOR_DIVIDE, OPERATOR_EQUALS, OPERATOR_GREATER, OPERATOR_GREATER_OR_EQUAL, OPERATOR_LESS, OPERATOR_LESS_OR_EQUAL, OPERATOR_MINUS, OPERATOR_MODULO, OPERATOR_MULTIPLY, OPERATOR_NOT_EQUALS, OPERATOR_PLUS, OPERATOR_POWER

Constructor Summary

Constructors

Constructor	Description
MultiCharacter(SourceReader reader)

Method Summary

Modifier and Type	Method	Description
LexicalElement	read()	Reads a lexeme and returns the created lexical element.

Methods inherited from class com.scriptbasic.lexer.elements.AbstractElementAnalyzer

getReader

Methods inherited from class java.lang.Object

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

Constructor Details

MultiCharacter

public MultiCharacter(SourceReader reader)

Method Details

read

public LexicalElement read()

Description copied from interface: LexicalElementAnalyzer

Reads a lexeme and returns the created lexical element.

If the characters read from the reader show that the lexeme is not the type that the class implementing this interface can handle then the characters are pushed back to he reader and null is returned.

If the characters read from the reader show that the lexeme is the type that the class implementing this interface can handle, but is erroneous, then the method throws the exception.

Specified by:

read in interface LexicalElementAnalyzer

Specified by:

read in class AbstractElementAnalyzer

Returns:

the created lexeme or null