com.singularsys.jep.parser
Class JccParser

java.lang.Object
  com.singularsys.jep.parser.JccParser

All Implemented Interfaces:

JccParserConstants, JccParserTreeConstants

public class JccParser
extends java.lang.Object
implements JccParserTreeConstants, JccParserConstants

Field Summary

Token	jj_nt Next token.
protected JJTJccParserState	jjtree
Token	token Current token.
JccParserTokenManager	token_source Generated Token Manager.

Fields inherited from interface com.singularsys.jep.parser.JccParserTreeConstants

JJTCONSTANT, JJTFUNNODE, jjtNodeName, JJTOPNODE, JJTSTART, JJTVARNODE, JJTVOID

Fields inherited from interface com.singularsys.jep.parser.JccParserConstants

AND, ASSIGN, COLON, COMMA, CROSS, DECIMAL_LITERAL, DEFAULT, DIGIT1, DIGIT2, DIV, DOT, EOF, EQ, EXPONENT, FLOATING_POINT_LITERAL, GE, GT, INDENTIFIER1, INDENTIFIER2, INTEGER_LITERAL, LE, LETTER1, LETTER2, LRND, LSQ, LT, MINUS, MOD, MUL, NE, NO_DOT_IN_IDENTIFIERS, NOT, OR, PLUS, POWER, RRND, RSQ, SEMI, STRING_LITERAL, tokenImage

Constructor Summary

JccParser(java.io.InputStream stream)
Constructor with InputStream.

JccParser(java.io.InputStream stream, java.lang.String encoding)
Constructor with InputStream and supplied encoding

JccParser(JccParserTokenManager tm)
Constructor with generated Token Manager.

JccParser(java.io.Reader stream)
Constructor.

Method Summary

void	AdditiveExpression()
void	AndExpression()
void	AnyConstant()
void	ArgumentList(int reqArguments, java.lang.String functionName)
void	ArrayAccess()
void	AssignExpression()
Node	continueParse() Continue parsing without re-initializing the stream.
void	disable_tracing() Disable tracing.
void	enable_tracing() Enable tracing.
void	EqualExpression()
void	Expression()
void	Function()
ParseException	generateParseException() Generate ParseException.
Token	getNextToken() Get the next Token.
Token	getToken(int index) Get the specific Token.
java.lang.String	Identifier()
void	ListExpression()
void	LValue()
void	MultiplicativeExpression()
void	OrExpression()
Node	parseStream(java.io.Reader stream, Jep jep, java.util.ArrayList<java.lang.String> errorList)
void	PowerExpression()
java.lang.Object	RealConstant()
void	ReInit(java.io.InputStream stream) Reinitialise.
void	ReInit(java.io.InputStream stream, java.lang.String encoding) Reinitialise.
void	ReInit(JccParserTokenManager tm) Reinitialise.
void	ReInit(java.io.Reader stream) Reinitialise.
void	RelationalExpression()
void	restart(java.io.Reader stream, Jep jep, java.util.ArrayList<java.lang.String> errorList) Restart the parse with the given stream.
void	RightExpression()
void	setInitialTokenManagerState(int state) Sets the initial state that the token manager is in.
ASTStart	Start() GRAMMAR START
void	UnaryExpression()
void	UnaryExpressionNotPlusMinus()
void	Variable()

Methods inherited from class java.lang.Object

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

Field Detail

jjtree

protected JJTJccParserState jjtree

token_source

public JccParserTokenManager token_source

Generated Token Manager.

token

public Token token

Current token.

jj_nt

public Token jj_nt

Next token.

Constructor Detail

JccParser

public JccParser(java.io.InputStream stream)

Constructor with InputStream.

JccParser

public JccParser(java.io.InputStream stream,
                 java.lang.String encoding)

Constructor with InputStream and supplied encoding

JccParser

public JccParser(java.io.Reader stream)

Constructor.

JccParser

public JccParser(JccParserTokenManager tm)

Constructor with generated Token Manager.

Method Detail

parseStream

public Node parseStream(java.io.Reader stream,
                        Jep jep,
                        java.util.ArrayList<java.lang.String> errorList)
                 throws ParseException

Throws:

ParseException

restart

public void restart(java.io.Reader stream,
                    Jep jep,
                    java.util.ArrayList<java.lang.String> errorList)

Restart the parse with the given stream.

Since:

2.3.0 beta 1

continueParse

public Node continueParse()
                   throws ParseException

Continue parsing without re-initializing the stream. Allows reentrance of parser so that strings like "x=1; y=2; z=3;" can be parsed. When a semi colon is encountered parsing finishes leaving the rest of the string unparsed. Parsing can be resumed from the current position by using this method. For example

 XJep j = new XJep();
 Parser parse = j.getParse();
 StringReader sr = new StringReader("x=1; y=2; z=3;");
 parse.restart(sr,j);
 Node node;
 try {
 while((node = j.continueParse())!=null) {
    j.println(node);
 } }catch(ParseException e) {}
 

Empty expressions, such as the middle one in "x=1;;y=2" are returned as an ASTStart node, the end of file is returned as null.

Throws:

ParseException

setInitialTokenManagerState

public void setInitialTokenManagerState(int state)

Sets the initial state that the token manager is in. Can be used to change how x.x is interpreted, either as a single identifier (DEFAULT) or as x x (NO_DOT_IN_IDENTIFIERS)

Parameters:

state - the state to be in. Currently the only legal values are DEFAULT and NO_DOT_IN_IDENTIFIER

Start

public final ASTStart Start()
                     throws ParseException

GRAMMAR START

Throws:

ParseException

Expression

public final void Expression()
                      throws ParseException

Throws:

ParseException

AssignExpression

public final void AssignExpression()
                            throws ParseException

Throws:

ParseException

RightExpression

public final void RightExpression()
                           throws ParseException

Throws:

ParseException

OrExpression

public final void OrExpression()
                        throws ParseException

Throws:

ParseException

AndExpression

public final void AndExpression()
                         throws ParseException

Throws:

ParseException

EqualExpression

public final void EqualExpression()
                           throws ParseException

Throws:

ParseException

RelationalExpression

public final void RelationalExpression()
                                throws ParseException

Throws:

ParseException

AdditiveExpression

public final void AdditiveExpression()
                              throws ParseException

Throws:

ParseException

MultiplicativeExpression

public final void MultiplicativeExpression()
                                    throws ParseException

Throws:

ParseException

UnaryExpression

public final void UnaryExpression()
                           throws ParseException

Throws:

ParseException

PowerExpression

public final void PowerExpression()
                           throws ParseException

Throws:

ParseException

UnaryExpressionNotPlusMinus

public final void UnaryExpressionNotPlusMinus()
                                       throws ParseException

Throws:

ParseException

ListExpression

public final void ListExpression()
                          throws ParseException

Throws:

ParseException

LValue

public final void LValue()
                  throws ParseException

Throws:

ParseException

ArrayAccess

public final void ArrayAccess()
                       throws ParseException

Throws:

ParseException

Variable

public final void Variable()
                    throws ParseException

Throws:

ParseException

Function

public final void Function()
                    throws ParseException

Throws:

ParseException

ArgumentList

public final void ArgumentList(int reqArguments,
                               java.lang.String functionName)
                        throws ParseException

Throws:

ParseException

Identifier

public final java.lang.String Identifier()
                                  throws ParseException

Throws:

ParseException

AnyConstant

public final void AnyConstant()
                       throws ParseException

Throws:

ParseException

RealConstant

public final java.lang.Object RealConstant()
                                    throws ParseException

Throws:

ParseException

ReInit

public void ReInit(java.io.InputStream stream)

Reinitialise.

ReInit

public void ReInit(java.io.InputStream stream,
                   java.lang.String encoding)

Reinitialise.

ReInit

public void ReInit(java.io.Reader stream)

Reinitialise.

ReInit

public void ReInit(JccParserTokenManager tm)

Reinitialise.

getNextToken

public final Token getNextToken()

Get the next Token.

getToken

public final Token getToken(int index)

Get the specific Token.

generateParseException

public ParseException generateParseException()

Generate ParseException.

enable_tracing

public final void enable_tracing()

Enable tracing.

disable_tracing

public final void disable_tracing()

Disable tracing.