Package net.hydromatic.filtex.parse

Class FiltexParserImpl

java.lang.Object

net.hydromatic.filtex.parse.FiltexParserImpl

All Implemented Interfaces:

FiltexParser, FiltexParserImplConstants

public class FiltexParserImpl
extends Object
implements FiltexParser, FiltexParserImplConstants

Parser for filter expressions, generated from FiltexParser.jj by JavaCC.

Field Summary

Fields

Modifier and Type	Field	Description
Token	jj_nt	Next token.
Token	token	Current token.
FiltexParserImplTokenManager	token_source	Generated Token Manager.

Fields inherited from interface net.hydromatic.filtex.parse.FiltexParserImplConstants

AFTER, AGO, AND, BANG_EQ, BEFORE, BOX, CHAR_LITERAL, COMMA, DATE_SEP, DD, DEFAULT, DOUBLE_LBRACE, DOUBLE_QUOTE, DOUBLE_RBRACE, EOF, EQ, FEET, FOR, FRIDAY, FROM, FY_YEAR, FY_YEAR_QUARTER, HH, HH_MM_SS, INSIDE, KILOMETERS, LAST, LT_GT, METERS, MI, MILES, MM, MONDAY, NEVER, NEXT, NOT, NOW, NULL, NUMBER_LITERAL, NUMBER_LITERAL0, OR, POSITIVE_INTEGER, QUOTED_STRING, SATURDAY, SS, SUNDAY, THIS, THURSDAY, TIME_SEP, TO, TODAY, tokenImage, TOMORROW, TUESDAY, WEDNESDAY, WHITESPACE, YEAR_MONTH, YEAR_QUARTER, YESTERDAY, YYYY, YYYY_MM_DD

Constructor Summary

Constructors

Constructor	Description
FiltexParserImpl(InputStream stream)	Constructor with InputStream.
FiltexParserImpl(InputStream stream, String encoding)	Constructor with InputStream and supplied encoding
FiltexParserImpl(Reader stream)	Constructor.
FiltexParserImpl(FiltexParserImplTokenManager tm)	Constructor with generated Token Manager.

Method Summary

Modifier and Type	Method	Description
final AstNode	absoluteBeforeAfter()
final void	addDateTerm(List<AstNode> list)	Adds a date term to a list.
final void	addTerm(List<AstNode> list)	Adds a term to a list.
final AstNode	anywhere()
final boolean	beforeAfter()
final AstNode	box()
final AstNode	circle()
final Date	date()
final AstNode	dateExpression()	Parses a date expression.
final AstNode	dateExpressionEof()	Parses a date filter expression followed by end-of-file.
final AstNode	dateTerm()	Parses a date term.
final Date	datetime()
final DatetimeUnit	dateUnit()
final AstNode	dayExpression()
final String	dayKeyword()
final String	dayOfWeekKeyword()
final void	disable_tracing()	Disable tracing.
final void	enable_tracing()	Enable tracing.
final AstNode	fiscalQuarter()
final AstNode	fiscalYear()
ParseException	generateParseException()	Generate ParseException.
final Token	getNextToken()	Get the next Token.
final Token	getToken(int index)	Get the specific Token.
final AstNode	interval(boolean is)
final AstNode	intervalComp1(boolean is)	Special interval, ">= 7 AND <80.44" becomes "(7, 80.44)", and ">=80.44 OR <.1" becomes "(0.01, 80.44]".
final AstNode	intervalComp2(boolean is)	Special interval, second kind; "<=80.44 AND >.1" becomes "(0.01, 80.44]", and "<= 7 OR >80.44" becomes "[7, 80.44)".
final boolean	intervalType()
final DatetimeUnit	intervalUnit()
final boolean	is()	Reads an optional prefix ("not", "<>", "!=") and returns whether the following term should be negated.
final AstNode	last()
final Location	location()
final AstNode	locationExpression()	Parses a location expression.
final AstNode	locationExpressionEof()	Parses a location filter expression followed by end-of-file.
final Ast.Interval	nInterval()
final AstNode	nulls()
final BigDecimal	number()
final AstNode	numericExpression()	Parses a numeric expression.
final AstNode	numericExpressionEof()	Parses a numeric filter expression followed by end-of-file.
final AstNode	onDatetime()
Pos	pos()	Returns the position of the last token returned by the parser.
final BigDecimal	positiveInteger()
void	ReInit(InputStream stream)	Reinitialise.
void	ReInit(InputStream stream, String encoding)	Reinitialise.
void	ReInit(Reader stream)	Reinitialise.
void	ReInit(FiltexParserImplTokenManager tm)	Reinitialise.
final AstNode	relativeRange()
void	setTabSize(int tabSize)
final AstNode	term()	Parses a numeric term.
final AstNode	thisNext()
final Op	thisNextLast()
final AstNode	thisRange()
final Time	time()
final DatetimeUnit	timeUnit()
final AstNode	to(boolean is)	Parses a range (such as "5 to 10", "to 10", "5 to"), and also a numeric literal (such as "5").
final boolean	trace_enabled()	Trace enabled.
final Unit	unit()
final AstNode	userAttribute()
final AstNode	year()
final AstNode	yearMonth()
final AstNode	yearQuarter()
void	zero(String file)	Sets the current file, and sets the current line to zero.

Methods inherited from class java.lang.Object

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

Field Details

token_source

public FiltexParserImplTokenManager token_source

Generated Token Manager.

token

public Token token

Current token.

jj_nt

public Token jj_nt

Next token.

Constructor Details

FiltexParserImpl

public FiltexParserImpl(InputStream stream)

Constructor with InputStream.

FiltexParserImpl

public FiltexParserImpl(InputStream stream,
 String encoding)

Constructor with InputStream and supplied encoding

FiltexParserImpl

public FiltexParserImpl(Reader stream)

Constructor.

FiltexParserImpl

public FiltexParserImpl(FiltexParserImplTokenManager tm)

Constructor with generated Token Manager.

Method Details

setTabSize

public void setTabSize(int tabSize)

pos

public Pos pos()

Description copied from interface: FiltexParser

Returns the position of the last token returned by the parser.

Specified by:

pos in interface FiltexParser

zero

public void zero(String file)

Description copied from interface: FiltexParser

Sets the current file, and sets the current line to zero.

Specified by:

zero in interface FiltexParser

dateExpressionEof

public final AstNode dateExpressionEof()
                                throws ParseException

Parses a date filter expression followed by end-of-file.

Throws:

ParseException

locationExpressionEof

public final AstNode locationExpressionEof()
                                    throws ParseException

Parses a location filter expression followed by end-of-file.

Throws:

ParseException

numericExpressionEof

public final AstNode numericExpressionEof()
                                   throws ParseException

Parses a numeric filter expression followed by end-of-file.

Throws:

ParseException

dateExpression

public final AstNode dateExpression()
                             throws ParseException

Parses a date expression.

Accepts expressions like: TODO

Throws:

ParseException

addDateTerm

public final void addDateTerm(List<AstNode> list)
                       throws ParseException

Adds a date term to a list.

Throws:

ParseException

dateTerm

public final AstNode dateTerm()
                       throws ParseException

Parses a date term.

Throws:

ParseException

nInterval

public final Ast.Interval nInterval()
                             throws ParseException

Throws:

ParseException

positiveInteger

public final BigDecimal positiveInteger()
                                 throws ParseException

Throws:

ParseException

dayExpression

public final AstNode dayExpression()
                            throws ParseException

Throws:

ParseException

dayKeyword

public final String dayKeyword()
                        throws ParseException

Throws:

ParseException

dayOfWeekKeyword

public final String dayOfWeekKeyword()
                              throws ParseException

Throws:

ParseException

year

public final AstNode year()
                   throws ParseException

Throws:

ParseException

fiscalYear

public final AstNode fiscalYear()
                         throws ParseException

Throws:

ParseException

fiscalQuarter

public final AstNode fiscalQuarter()
                            throws ParseException

Throws:

ParseException

yearMonth

public final AstNode yearMonth()
                        throws ParseException

Throws:

ParseException

yearQuarter

public final AstNode yearQuarter()
                          throws ParseException

Throws:

ParseException

intervalUnit

public final DatetimeUnit intervalUnit()
                                throws ParseException

Throws:

ParseException

timeUnit

public final DatetimeUnit timeUnit()
                            throws ParseException

Throws:

ParseException

dateUnit

public final DatetimeUnit dateUnit()
                            throws ParseException

Throws:

ParseException

thisNext

public final AstNode thisNext()
                       throws ParseException

Throws:

ParseException

last

public final AstNode last()
                   throws ParseException

Throws:

ParseException

thisRange

public final AstNode thisRange()
                        throws ParseException

Throws:

ParseException

intervalType

public final boolean intervalType()
                           throws ParseException

Throws:

ParseException

relativeRange

public final AstNode relativeRange()
                            throws ParseException

Throws:

ParseException

beforeAfter

public final boolean beforeAfter()
                          throws ParseException

Throws:

ParseException

absoluteBeforeAfter

public final AstNode absoluteBeforeAfter()
                                  throws ParseException

Throws:

ParseException

thisNextLast

public final Op thisNextLast()
                      throws ParseException

Throws:

ParseException

onDatetime

public final AstNode onDatetime()
                         throws ParseException

Throws:

ParseException

datetime

public final Date datetime()
                    throws ParseException

Throws:

ParseException

date

public final Date date()
                throws ParseException

Throws:

ParseException

time

public final Time time()
                throws ParseException

Throws:

ParseException

locationExpression

public final AstNode locationExpression()
                                 throws ParseException

Parses a location expression.

Accepts expressions like: "36.97, -122.03", "40 miles from 36.97, -122.03", "inside box from 72.33, -173.14 to 14.39, -61.70"

Throws:

ParseException

anywhere

public final AstNode anywhere()
                       throws ParseException

Throws:

ParseException

nulls

public final AstNode nulls()
                    throws ParseException

Throws:

ParseException

box

public final AstNode box()
                  throws ParseException

Throws:

ParseException

circle

public final AstNode circle()
                     throws ParseException

Throws:

ParseException

location

public final Location location()
                        throws ParseException

Throws:

ParseException

unit

public final Unit unit()
                throws ParseException

Throws:

ParseException

numericExpression

public final AstNode numericExpression()
                                throws ParseException

Parses a numeric expression.

Accepts expressions like "not 66, 99, 4", "1 to 100" and returns an AST. See https://docs.looker.com/reference/filter-expressions#number

A top-level numeric expression is a comma-separated list of terms.

Throws:

ParseException

addTerm

public final void addTerm(List<AstNode> list)
                   throws ParseException

Adds a term to a list.

Throws:

ParseException

term

public final AstNode term()
                   throws ParseException

Parses a numeric term.

Throws:

ParseException

is

public final boolean is()
                 throws ParseException

Reads an optional prefix ("not", "<>", "!=") and returns whether the following term should be negated.

Throws:

ParseException

intervalComp1

public final AstNode intervalComp1(boolean is)
                            throws ParseException

Special interval, ">= 7 AND <80.44" becomes "(7, 80.44)", and ">=80.44 OR <.1" becomes "(0.01, 80.44]". Also parses comparison, "> 10".

Throws:

ParseException

intervalComp2

public final AstNode intervalComp2(boolean is)
                            throws ParseException

Special interval, second kind; "<=80.44 AND >.1" becomes "(0.01, 80.44]", and "<= 7 OR >80.44" becomes "[7, 80.44)". Also parses comparison, "< 10".

Throws:

ParseException

to

public final AstNode to(boolean is)
                 throws ParseException

Parses a range (such as "5 to 10", "to 10", "5 to"), and also a numeric literal (such as "5").

Throws:

ParseException

interval

public final AstNode interval(boolean is)
                       throws ParseException

Throws:

ParseException

userAttribute

public final AstNode userAttribute()
                            throws ParseException

Throws:

ParseException

number

public final BigDecimal number()
                        throws ParseException

Throws:

ParseException

ReInit

public void ReInit(InputStream stream)

Reinitialise.

ReInit

public void ReInit(InputStream stream,
 String encoding)

Reinitialise.

ReInit

public void ReInit(Reader stream)

Reinitialise.

ReInit

public void ReInit(FiltexParserImplTokenManager 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.

trace_enabled

public final boolean trace_enabled()

Trace enabled.

enable_tracing

public final void enable_tracing()

Enable tracing.

disable_tracing

public final void disable_tracing()

Disable tracing.