artisynth.core.modelbase

Class ScanWriteUtils

java.lang.Object

artisynth.core.modelbase.ScanWriteUtils

public class ScanWriteUtils
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
ScanWriteUtils()

Method Summary

Modifier and Type	Method and Description
static boolean	getTokenPrinting() Returns true if token printing is enabled in the scanfull() method.
static boolean	postscanAttributeName(java.util.Deque<ScanToken> tokens, java.lang.String name) Checks if the next token in the queue is a StringToken containing the specified name.
static <C> C	postscanComponent(java.util.Deque<ScanToken> tokens, java.lang.Class<C> clazz, CompositeComponent ancestor) Calls postscan() for an component stored in the token queue.
static boolean	postscanComponent(java.util.Deque<ScanToken> tokens, CompositeComponent ancestor) Checks if the next token on the queue is an ObjectToken holding a component reference.
static boolean	postscanComponent(java.util.Deque<ScanToken> tokens, java.lang.String name, CompositeComponent ancestor) Checks if the next token on the queue is a StringToken matching a specific attribute name.
static void	postscanComponentBegin(java.util.Deque<ScanToken> tokens, ModelComponent comp) Checks if the next token in the queue is a BEGIN token for a component, and if so, consumes it.
static ScanToken	postscanComponentToken(java.util.Deque<ScanToken> tokens) Checks if the next token on the queue is an ObjectToken holding a component reference.
static java.util.ArrayList<Property>	postscanProperties(java.util.Deque<ScanToken> tokens, CompositeComponent ancestor) Checks that the next set of tokens in the stream consist of a BEGIN token, a set of property paths, and an END token.
static Property	postscanProperty(java.util.Deque<ScanToken> tokens, CompositeComponent ancestor) Removes the next token from the queue, checks that it is a StringToken containing a property path relative to ancestor, and locates and returns the property.
static boolean	postscanPropertyValue(java.util.Deque<ScanToken> tokens, HasProperties host, java.lang.String propName) Checks if the next token in the queue is a StringToken containing a specified property name.
static boolean	postscanPropertyValues(java.util.Deque<ScanToken> tokens, HasProperties host, java.lang.String[] propNames) Checks if the next token in the queue is a StringToken containing one of a specified set of property names.
static <C> C	postscanReference(java.util.Deque<ScanToken> tokens, java.lang.Class<C> clazz, CompositeComponent ancestor) Removes the next token from the queue, checks that it is a StringToken containing a reference path relative to ancestor, locates the referenced component, verifies that it is an instance of clazz, and returns it.
static <C> C	postscanReference(StringToken strtok, java.lang.Class<C> clazz, CompositeComponent ancestor)
static <C> C[]	postscanReferences(java.util.Deque<ScanToken> tokens, java.lang.Class<C> clazz, CompositeComponent ancestor) Checks that the next set of tokens in the stream consist of a BEGIN token, a set of reference path names, and an END token.
static <C> void	postscanReferences(java.util.Deque<ScanToken> tokens, java.util.Collection<C> refs, java.lang.Class<C> clazz, CompositeComponent ancestor) Checks that the next set of tokens in the stream consist of a BEGIN token, a set of reference path names, and an END token.
static void	printTokens(java.util.Deque<ScanToken> tokens) Diagnostic method to print a token queue to the standard output stream.
static void	printTokens(java.io.PrintWriter pw, java.util.Deque<ScanToken> tokens) Diagnostic method to print a token queue to a print writer.
static void	scanAndDiscard(ReaderTokenizer rtok) Scans and discards the input associated with a component, which is assumed to be enclosed within square brackets.
static boolean	scanAndStoreComponent(ReaderTokenizer rtok, java.lang.String name, java.util.Deque<ScanToken> tokens) Attempts to scan a class-qualified component associated with a given attribute name.
static void	scanAndStorePropertyPath(ReaderTokenizer rtok, java.util.Deque<ScanToken> tokens) If the next input token is a quoted string or word, then assume that it corresponds to property path, store its value in the token queue as a StringToken, and return true.
static boolean	scanAndStorePropertyPath(ReaderTokenizer rtok, java.lang.String name, java.util.Deque<ScanToken> tokens) Attempts to scan a property path associated with a given attribute name.
static int	scanAndStorePropertyPaths(ReaderTokenizer rtok, java.util.Deque<ScanToken> tokens) Assumes that the next set of input tokens are a set of property paths enclosed between square brackets.
static int	scanAndStorePropertyPaths(ReaderTokenizer rtok, java.lang.String name, java.util.Deque<ScanToken> tokens) Attempts to scan a set of property paths associated with a given attribute name.
static boolean	scanAndStorePropertyValue(ReaderTokenizer rtok, HasProperties host, java.lang.String propName, java.util.Deque<ScanToken> tokens) Attempts to scan and store a specific property value for a specified host.
static boolean	scanAndStorePropertyValues(ReaderTokenizer rtok, HasProperties host, java.lang.String[] propNames, java.util.Deque<ScanToken> tokens) Attempts to scan and store a specific set of property values for a specified host.
static boolean	scanAndStoreReference(ReaderTokenizer rtok, java.util.Deque<ScanToken> tokens) If the next input token is a quoted string or word, then assume that it corresponds to component reference path, store its value in the token queue as a StringToken, and return true.
static boolean	scanAndStoreReference(ReaderTokenizer rtok, java.lang.String name, java.util.Deque<ScanToken> tokens) Attempts to scan a reference path associated with a given attribute name.
static int	scanAndStoreReferences(ReaderTokenizer rtok, java.util.Deque<ScanToken> tokens) Assumes that the next set of input tokens are a set of component reference paths enclosed between square brackets.
static int	scanAndStoreReferences(ReaderTokenizer rtok, java.lang.String name, java.util.Deque<ScanToken> tokens) Attempts to scan a set of reference paths associated with a given attribute name.
static boolean	scanAttributeName(ReaderTokenizer rtok, java.lang.String name)
static void	scanfull(ReaderTokenizer rtok, ModelComponent comp, CompositeComponent ancestor) Performs both a scan and a postscan for a specific component.
static boolean	scanProperty(ReaderTokenizer rtok, HasProperties host) Attempts to scan and set a property value for a specified host.
static java.lang.Object	scanPropertyValue(ReaderTokenizer rtok, HasProperties host, java.lang.String propName) Scans a specific property value for a host, assuming that the property name has already been scanned and matched.
static Vector3d[]	scanVector3dList(ReaderTokenizer rtok)
static void	setTokenPrinting(boolean enable) Debugging hook to enable printing of the token queue produced in the scanfull() method, before postscan() is called.
static void	writeBracketedReferences(java.io.PrintWriter pw, java.util.Collection<? extends ModelComponent> comps, CompositeComponent ancestor) Writes the reference paths for a set of components to a print writer, enclosed by square brackets.
static void	writeComponent(java.io.PrintWriter pw, NumberFormat fmt, Scannable obj, java.lang.Object ref) Writes a class-qualified component to a print writer.
static void	writeReferences(java.io.PrintWriter pw, java.lang.Iterable<ModelComponent> comps, CompositeComponent ancestor) Writes the reference paths for a set of components to a print writer.
static void	writeVector3dList(java.io.PrintWriter pw, NumberFormat fmt, Vector3d[] list)

Methods inherited from class java.lang.Object

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

Constructor Detail

ScanWriteUtils

public ScanWriteUtils()

Method Detail

setTokenPrinting

public static void setTokenPrinting(boolean enable)

Debugging hook to enable printing of the token queue produced in the scanfull() method, before postscan() is called.

Parameters:

enable - if true, enables token printing.

getTokenPrinting

public static boolean getTokenPrinting()

Returns true if token printing is enabled in the scanfull() method.

Returns:

true if token printing is enabled in scan()

scanAndStoreReference

public static boolean scanAndStoreReference(ReaderTokenizer rtok,
                                            java.util.Deque<ScanToken> tokens)
                                     throws java.io.IOException

If the next input token is a quoted string or word, then assume that it corresponds to component reference path, store its value in the token queue as a StringToken, and return true.

Parameters:

rtok - input token stream

tokens - token queue for postscan

Returns:

true if reference path is scanned and stored in the queue as a StringToken

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanAndStoreReferences

public static int scanAndStoreReferences(ReaderTokenizer rtok,
                                         java.util.Deque<ScanToken> tokens)
                                  throws java.io.IOException

Assumes that the next set of input tokens are a set of component reference paths enclosed between square brackets. Read these reference paths, stored their values in the token queue as a set of StringTokens, and return the number of reference paths found.

Parameters:

rtok - input token stream

tokens - token storage queue for postscan

Returns:

number of reference paths read

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanAttributeName

public static boolean scanAttributeName(ReaderTokenizer rtok,
                                        java.lang.String name)
                                 throws java.io.IOException

Throws:

java.io.IOException

scanAndStorePropertyPath

public static void scanAndStorePropertyPath(ReaderTokenizer rtok,
                                            java.util.Deque<ScanToken> tokens)
                                     throws java.io.IOException

If the next input token is a quoted string or word, then assume that it corresponds to property path, store its value in the token queue as a StringToken, and return true.

Parameters:

rtok - input token stream

tokens - token storage queue for postscan

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanAndStorePropertyPaths

public static int scanAndStorePropertyPaths(ReaderTokenizer rtok,
                                            java.util.Deque<ScanToken> tokens)
                                     throws java.io.IOException

Assumes that the next set of input tokens are a set of property paths enclosed between square brackets. Read these reference paths, store their values in the token queue as a set of StringTokens, and return the number of paths found.

Parameters:

rtok - input token stream

tokens - token storage queue for postscan

Returns:

number of paths read

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanAndStoreReference

public static boolean scanAndStoreReference(ReaderTokenizer rtok,
                                            java.lang.String name,
                                            java.util.Deque<ScanToken> tokens)
                                     throws java.io.IOException

Attempts to scan a reference path associated with a given attribute name. Checks if the current token is a word matching the attribute name. If so, scans '=' and the reference path, stores the both the attribute name and the reference path in the token queue, and returns true. Otherwise, returns false.

Parameters:

rtok - input token stream

name - attribute name

tokens - token storage queue for postscan

Returns:

true if the attribute name was matched and the reference scanned

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanAndStoreReferences

public static int scanAndStoreReferences(ReaderTokenizer rtok,
                                         java.lang.String name,
                                         java.util.Deque<ScanToken> tokens)
                                  throws java.io.IOException

Attempts to scan a set of reference paths associated with a given attribute name. Checks if the current token is a word matching the attribute name. If so, scan '=' and the reference paths ( assumed to be enclosed by square brackets), store the paths in the token queue, and return the number of paths found. Otherwise, return -1.

Parameters:

rtok - input token stream

name - attribute name

tokens - token storage queue for postscan

Returns:

number of paths found, or -1 if the attribute name did not match

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanAndStorePropertyPath

public static boolean scanAndStorePropertyPath(ReaderTokenizer rtok,
                                               java.lang.String name,
                                               java.util.Deque<ScanToken> tokens)
                                        throws java.io.IOException

Attempts to scan a property path associated with a given attribute name. Checks if the current token is a word matching the attribute name. If so, scan '=' and the property path, store the path in the token queue, and return true. Otherwise, return false.

Parameters:

rtok - input token stream

name - attribute name

tokens - token storage queue for postscan

Returns:

true if the attribute name was matched

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanAndStorePropertyPaths

public static int scanAndStorePropertyPaths(ReaderTokenizer rtok,
                                            java.lang.String name,
                                            java.util.Deque<ScanToken> tokens)
                                     throws java.io.IOException

Attempts to scan a set of property paths associated with a given attribute name. Checks if the current token is a word matching the attribute name. If so, scan '=' and the property paths (assumed to be enclosed in square brackets), store the paths in the token queue, and return true. Otherwise, return false.

Parameters:

rtok - input token stream

name - attribute name

tokens - token storage queue for postscan

Returns:

number of paths found, or -1 if the attribute name did not match

Throws:

java.io.IOException - if an I/O or syntax error occurred

postscanAttributeName

public static boolean postscanAttributeName(java.util.Deque<ScanToken> tokens,
                                            java.lang.String name)

Checks if the next token in the queue is a StringToken containing the specified name. If so, consumes that token and returns true. Otherwise, returns false.

Parameters:

tokens - queue of stored tokens

name - name to check on the token queue

Returns:

true if the next token is a StringToken containing name.

postscanComponentBegin

public static void postscanComponentBegin(java.util.Deque<ScanToken> tokens,
                                          ModelComponent comp)
                                   throws java.io.IOException

Checks if the next token in the queue is a BEGIN token for a component, and if so, consumes it. Otherwise, throws an exception.

Parameters:

tokens - queue of stored tokens

comp - component associated with the BEGIN

Throws:

java.io.IOException - if an I/O or syntax error occurred

postscanComponent

public static boolean postscanComponent(java.util.Deque<ScanToken> tokens,
                                        CompositeComponent ancestor)
                                 throws java.io.IOException

Checks if the next token on the queue is an ObjectToken holding a component reference. If so, consumes the token, postscans the component, and returns true. Otherwise, returns false.

Parameters:

tokens - queue of stored tokens

ancestor - ancestor for evaluating reference paths

Returns:

true if the next token is an ObjectToken holding a component reference

Throws:

java.io.IOException - if unexpected token input was encountered

postscanComponent

public static boolean postscanComponent(java.util.Deque<ScanToken> tokens,
                                        java.lang.String name,
                                        CompositeComponent ancestor)
                                 throws java.io.IOException

Checks if the next token on the queue is a StringToken matching a specific attribute name. If so, consumes the token, looks for an ObjectToken holding a component and postscans that component.

Parameters:

tokens - queue of stored tokens

name - attribute name

ancestor - ancestor for evaluating reference paths

Returns:

true if the attribute name was matched and the component scanned

Throws:

java.io.IOException - if unexpected token input was encountered

postscanComponentToken

public static ScanToken postscanComponentToken(java.util.Deque<ScanToken> tokens)
                                        throws java.io.IOException

Checks if the next token on the queue is an ObjectToken holding a component reference. If so, consumes the token and returns it. Otherwise, returns null.

Parameters:

tokens - queue of stored tokens

Returns:

ObjectToken holding a component reference, or null.

Throws:

java.io.IOException - if unexpected token input was encountered

postscanReference

public static <C> C postscanReference(StringToken strtok,
                                      java.lang.Class<C> clazz,
                                      CompositeComponent ancestor)
                               throws java.io.IOException

Throws:

java.io.IOException

postscanReference

public static <C> C postscanReference(java.util.Deque<ScanToken> tokens,
                                      java.lang.Class<C> clazz,
                                      CompositeComponent ancestor)
                               throws java.io.IOException

Removes the next token from the queue, checks that it is a StringToken containing a reference path relative to ancestor, locates the referenced component, verifies that it is an instance of clazz, and returns it.

Parameters:

tokens - queue of stored tokens

clazz - class that the referenced component must be an instance of

ancestor - ancestor for the reference path

Returns:

referenced component

Throws:

java.io.IOException - if the next token is not a StringToken or if the reference cannot be found

postscanReferences

public static <C> C[] postscanReferences(java.util.Deque<ScanToken> tokens,
                                         java.lang.Class<C> clazz,
                                         CompositeComponent ancestor)
                                  throws java.io.IOException

Checks that the next set of tokens in the stream consist of a BEGIN token, a set of reference path names, and an END token. The corresponding components are then located with respect to ancestor, type checked to ensure that they are instances of clazz, and then returned as an array.

Parameters:

tokens - queue of stored tokens

clazz - class that each referenced component must be an instance of

ancestor - ancestor for the reference path

Returns:

array of component references

Throws:

java.io.IOException - if the token structure is incorrect or if the referenced components cannot be found.

postscanReferences

public static <C> void postscanReferences(java.util.Deque<ScanToken> tokens,
                                          java.util.Collection<C> refs,
                                          java.lang.Class<C> clazz,
                                          CompositeComponent ancestor)
                                   throws java.io.IOException

Checks that the next set of tokens in the stream consist of a BEGIN token, a set of reference path names, and an END token. The corresponding components are then located with respect to ancestor, type checked to ensure that they are instances of clazz, and then returned in the collection refs.

Parameters:

tokens - queue of stored tokens

refs - returns the component references

clazz - class that each referenced component must be an instance of

ancestor - ancestor for the reference path

Throws:

java.io.IOException - if the token structure is incorrect or if the referenced components cannot be found.

postscanProperty

public static Property postscanProperty(java.util.Deque<ScanToken> tokens,
                                        CompositeComponent ancestor)
                                 throws java.io.IOException

Removes the next token from the queue, checks that it is a StringToken containing a property path relative to ancestor, and locates and returns the property.

Parameters:

tokens - queue of stored tokens

ancestor - ancestor for the property path

Returns:

property corresponding to the path

Throws:

java.io.IOException - if the next token is not a StringToken or if the property cannot be found

postscanProperties

public static java.util.ArrayList<Property> postscanProperties(java.util.Deque<ScanToken> tokens,
                                                               CompositeComponent ancestor)
                                                        throws java.io.IOException

Checks that the next set of tokens in the stream consist of a BEGIN token, a set of property paths, and an END token. The corresponding properties are then located with respect to ancestor and returned in an ArrayList.

Parameters:

tokens - queue of stored tokens

ancestor - ancestor for the reference path

Returns:

ArrayList of properties

Throws:

java.io.IOException - if the token structure is incorrect or if the properties cannot be found

scanfull

public static void scanfull(ReaderTokenizer rtok,
                            ModelComponent comp,
                            CompositeComponent ancestor)
                     throws java.io.IOException

Performs both a scan and a postscan for a specific component. This will include creating the token storage queue. If the component is the top node of the hierarchy, then the specified ancestor should be the component itself.

Parameters:

rtok - input token stream

comp - component to scan

ancestor - ancestor component for resolving references

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanAndDiscard

public static void scanAndDiscard(ReaderTokenizer rtok)
                           throws java.io.IOException

Scans and discards the input associated with a component, which is assumed to be enclosed within square brackets. This is used in situations where we want to ignore the input associated with a particular component.

Parameters:

rtok - input token stream

Throws:

java.io.IOException

printTokens

public static void printTokens(java.util.Deque<ScanToken> tokens)

Diagnostic method to print a token queue to the standard output stream.

Parameters:

tokens - token queue to be printed

printTokens

public static void printTokens(java.io.PrintWriter pw,
                               java.util.Deque<ScanToken> tokens)

Diagnostic method to print a token queue to a print writer.

Parameters:

pw - print writer for printing the token queue

tokens - token queue to be printed

scanProperty

public static boolean scanProperty(ReaderTokenizer rtok,
                                   HasProperties host)
                            throws java.io.IOException

Attempts to scan and set a property value for a specified host. Checks if the current token is a word matching one of the host's property names. If so, scan either '=' or ':' and the following property value, set this value within the host, and return true. Otherwise, return false.

Parameters:

rtok - input token stream

host - host containing the property

Returns:

true if a property was matched and scanned

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanPropertyValue

public static java.lang.Object scanPropertyValue(ReaderTokenizer rtok,
                                                 HasProperties host,
                                                 java.lang.String propName)
                                          throws java.io.IOException

Scans a specific property value for a host, assuming that the property name has already been scanned and matched. Scans either '=' or ':' and the following property value, and returns the value.

Parameters:

rtok - input token stream

host - host containing the property

propName - property to try and scan

Returns:

the scanning property value

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanAndStorePropertyValues

public static boolean scanAndStorePropertyValues(ReaderTokenizer rtok,
                                                 HasProperties host,
                                                 java.lang.String[] propNames,
                                                 java.util.Deque<ScanToken> tokens)
                                          throws java.io.IOException

Attempts to scan and store a specific set of property values for a specified host. Checks if the current token is a word matching one of the specified property names. If so, scan either '=' or ':' and the following property value, store the property name and value in the token queue using a StrinToken and an ObjectToken, and return true. Otherwise, return false.

This method is intended for handling property values which must be set in the post-scan stage after references have been set.

Parameters:

rtok - input token stream

host - host containing the properties

propNames - names of properties to match

tokens - token queue for postscan

Returns:

true if a property value was scanned and stored.

Throws:

java.io.IOException - if an I/O or syntax error occurred

scanAndStorePropertyValue

public static boolean scanAndStorePropertyValue(ReaderTokenizer rtok,
                                                HasProperties host,
                                                java.lang.String propName,
                                                java.util.Deque<ScanToken> tokens)
                                         throws java.io.IOException

Attempts to scan and store a specific property value for a specified host. Checks if the current token is a word matching the specified property name. If so, scan either '=' or ':' and the following property value, store the property name and value in the token queue using a StrinToken and an ObjectToken, and return true. Otherwise, return false.

This method is intended for handling property values which must be set in the post-scan stage after references have been set.

Parameters:

rtok - input token stream

host - host containing the properties

propName - name of the property to match

tokens - token queue for postscan

Returns:

true if z roperty value was scanned and stored.

Throws:

java.io.IOException - if an I/O or syntax error occurred

postscanPropertyValues

public static boolean postscanPropertyValues(java.util.Deque<ScanToken> tokens,
                                             HasProperties host,
                                             java.lang.String[] propNames)
                                      throws java.io.IOException

Checks if the next token in the queue is a StringToken containing one of a specified set of property names. If so, consumes that token, along with a following token giving the property value, sets that property value within the host, and returns true. Otherwise, returns false.

Parameters:

tokens - queue of stored tokens

host - host containing the properties

propNames - names of the properties to match

Returns:

true if a property was matched and set

Throws:

java.io.IOException - if an I/O or syntax error occurred

postscanPropertyValue

public static boolean postscanPropertyValue(java.util.Deque<ScanToken> tokens,
                                            HasProperties host,
                                            java.lang.String propName)
                                     throws java.io.IOException

Checks if the next token in the queue is a StringToken containing a specified property name. If so, consumes that token, along with a following token giving the property value, sets that property value within the host, and returns true. Otherwise, returns false.

Parameters:

tokens - queue of stored tokens

host - host containing the properties

propName - names of the property to match

Returns:

true if a property was matched and set

Throws:

java.io.IOException - if an I/O or syntax error occurred

writeBracketedReferences

public static void writeBracketedReferences(java.io.PrintWriter pw,
                                            java.util.Collection<? extends ModelComponent> comps,
                                            CompositeComponent ancestor)
                                     throws java.io.IOException

Writes the reference paths for a set of components to a print writer, enclosed by square brackets.

Parameters:

pw - PrintWriter to write the references to

comps - components providing the reference paths

ancestor - ancestor component with respect to which reference paths should be generated

Throws:

java.io.IOException

writeReferences

public static void writeReferences(java.io.PrintWriter pw,
                                   java.lang.Iterable<ModelComponent> comps,
                                   CompositeComponent ancestor)
                            throws java.io.IOException

Writes the reference paths for a set of components to a print writer. Unlike writeBracketedReferences(), the paths are not enclosed within square brackets.

Parameters:

pw - PrintWriter to write the references to

comps - components providing the reference paths

ancestor - ancestor component with respect to which reference paths should be generated

Throws:

java.io.IOException

scanAndStoreComponent

public static boolean scanAndStoreComponent(ReaderTokenizer rtok,
                                            java.lang.String name,
                                            java.util.Deque<ScanToken> tokens)
                                     throws java.io.IOException

Attempts to scan a class-qualified component associated with a given attribute name. Checks if the current token is a word matching the attribute name. If so, scans '=' and the component class name, instantiates the component and scans that, places both the attribute name and the component in the in the token queue, and returns true. Otherwise, returns false.

Parameters:

rtok - input token stream

name - attribute name

tokens - token storage queue for postscan

Returns:

true if the attribute name was matched and the component was scanned

Throws:

java.io.IOException - if an I/O or syntax error occurred

postscanComponent

public static <C> C postscanComponent(java.util.Deque<ScanToken> tokens,
                                      java.lang.Class<C> clazz,
                                      CompositeComponent ancestor)
                               throws java.io.IOException

Calls postscan() for an component stored in the token queue. Removes the next token from the queue, checks that it is an ObjectToken containing an component, verifies that the component it is an instance of clazz, calls postscan() for the component and returns it.

Parameters:

tokens - queue of stored tokens

clazz - class that the component must be an instance of

ancestor - ancestor uses for post-scanning the component

Returns:

component that was on the queue

Throws:

java.io.IOException - if the next token is not an ObjectToken, the component is not an instance of clazz, or an error occured within the component's postscan() call.

writeComponent

public static void writeComponent(java.io.PrintWriter pw,
                                  NumberFormat fmt,
                                  Scannable obj,
                                  java.lang.Object ref)
                           throws java.io.IOException

Writes a class-qualified component to a print writer.

Parameters:

pw - PrintWriter to write the component to

fmt - numeric format for writing the component

obj - component to be written

ref - reference object used for writing the component

Throws:

java.io.IOException

writeVector3dList

public static void writeVector3dList(java.io.PrintWriter pw,
                                     NumberFormat fmt,
                                     Vector3d[] list)
                              throws java.io.IOException

Throws:

java.io.IOException

scanVector3dList

public static Vector3d[] scanVector3dList(ReaderTokenizer rtok)
                                   throws java.io.IOException

Throws:

java.io.IOException