Package org.qdl_lang.variables

Class StemUtility

java.lang.Object

org.qdl_lang.variables.StemUtility

public class StemUtility
extends Object

Created by Jeff Gaynor
on 3/24/21 at 12:38 PM

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	StemUtility.DyadAxisAction	Action to be applied at a given axis.
static interface	StemUtility.StemAxisWalkerAction1	For operations that return a stem.

Field Summary

Fields

Modifier and Type	Field	Description
protected static int	BOOLEAN_TYPE
protected static int	DOUBLE_TYPE
protected static int	FLOAT_TYPE
protected static int	INT_TYPE
static Long	LAST_AXIS_ARGUMENT_VALUE
protected static int	LIST_TYPE
protected static int	LONG_TYPE
protected static int	MAP_TYPE
protected static int	STRING_TYPE
protected static int	UNKNON_TYPE

Constructor Summary

Constructors

Constructor	Description
StemUtility()

Method Summary

Modifier and Type	Method	Description
static boolean	areAllStems(Object... objects)
static boolean	areNoneStems(Object... objects)
static void	axisDayadRecursion(QDLStem out0, QDLStem left0, QDLStem right0, int depth, boolean maxDepth, StemUtility.DyadAxisAction axisAction)	Apply some action along an axis.
static Object	axisWalker(QDLStem inStem, int depth, StemUtility.StemAxisWalkerAction1 walker)	Recurses through stem that has arbitrary rank.
protected static Object	convert(Object value)	Converts Java objects to one of the Java objects that QDL uses.
static Object	convertToPOJO(QDLValue element, boolean escapeNames, int type)	For use in filtering QDLValues to POJOs (plain old java object) that can be put into JSON.
static void	doNodeSurgery(ExpressionStemNode ESN, State state)
static void	formatList(QDLStem stem)
protected static int	getType(Object obj)
static boolean	isStem(Object o)
static QDLStem	listToStem(List list)
static void	main(String[] args)
static QDLStem	mapToStem(Map map)	Convert a generic map to a stem
static QDLStem	mapToStem(QDLStem out, Map map)
static void	put(QDLStem stem, Object key, Object value)	Since Java's use of generics precludes a general QDLStem put on Objects, this utility does that.
static void	setStemValue(QDLStem stem, Map<String,Object> values)	Floats a map of values to QDLValues in the stem.
static String	stemListToString(QDLStem contents, boolean forceToString)	Convert a stem list to a string, separated by line feeds.

Methods inherited from class java.lang.Object

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

Field Detail

LAST_AXIS_ARGUMENT_VALUE

public static final Long LAST_AXIS_ARGUMENT_VALUE

UNKNON_TYPE

protected static final int UNKNON_TYPE

See Also:

Constant Field Values

INT_TYPE

protected static final int INT_TYPE

See Also:

Constant Field Values

FLOAT_TYPE

protected static final int FLOAT_TYPE

See Also:

Constant Field Values

DOUBLE_TYPE

protected static final int DOUBLE_TYPE

See Also:

Constant Field Values

LONG_TYPE

protected static final int LONG_TYPE

See Also:

Constant Field Values

BOOLEAN_TYPE

protected static final int BOOLEAN_TYPE

See Also:

Constant Field Values

STRING_TYPE

protected static final int STRING_TYPE

See Also:

Constant Field Values

LIST_TYPE

protected static final int LIST_TYPE

See Also:

Constant Field Values

MAP_TYPE

protected static final int MAP_TYPE

See Also:

Constant Field Values

Constructor Detail

StemUtility

public StemUtility()

Method Detail

isStem

public static boolean isStem(Object o)

areNoneStems

public static boolean areNoneStems(Object... objects)

areAllStems

public static boolean areAllStems(Object... objects)

axisDayadRecursion

public static void axisDayadRecursion(QDLStem out0,
                                      QDLStem left0,
                                      QDLStem right0,
                                      int depth,
                                      boolean maxDepth,
                                      StemUtility.DyadAxisAction axisAction)

Apply some action along an axis. This will recurse to a given axis and apply an action there

Parameters:

out0 -

left0 -

right0 -

depth -

maxDepth -

axisAction -

axisWalker

public static Object axisWalker(QDLStem inStem,
                                int depth,
                                StemUtility.StemAxisWalkerAction1 walker)

Recurses through stem that has arbitrary rank.

Parameters:

inStem -

depth -

walker -

Returns:

doNodeSurgery

public static void doNodeSurgery(ExpressionStemNode ESN,
                                 State state)

formatList

public static void formatList(QDLStem stem)

main

public static void main(String[] args)

stemListToString

public static String stemListToString(QDLStem contents,
                                      boolean forceToString)

Convert a stem list to a string, separated by line feeds. If forceToString is true, then every elements toString is called, otherwise, if the element is not a string, an exception is thrown.

Parameters:

contents -

forceToString -

Returns:

mapToStem

public static QDLStem mapToStem(Map map)

Convert a generic map to a stem

Parameters:

map -

Returns:

listToStem

public static QDLStem listToStem(List list)

mapToStem

public static QDLStem mapToStem(QDLStem out,
                                Map map)

convert

protected static Object convert(Object value)

Converts Java objects to one of the Java objects that QDL uses.

Parameters:

value -

Returns:

getType

protected static int getType(Object obj)

setStemValue

public static void setStemValue(QDLStem stem,
                                Map<String,Object> values)

Floats a map of values to QDLValues in the stem. This way you don't have to mess with conversions

Parameters:

stem -

values -

put

public static void put(QDLStem stem,
                       Object key,
                       Object value)

Since Java's use of generics precludes a general QDLStem put on Objects, this utility does that.

Parameters:

stem -

key -

value -

convertToPOJO

public static Object convertToPOJO(QDLValue element,
                                   boolean escapeNames,
                                   int type)

For use in filtering QDLValues to POJOs (plain old java object) that can be put into JSON.

Parameters:

element -

escapeNames -

type -

Returns: