Package eu.bandm.tools.d2d2.base

Class XsltInstance

java.lang.Object

eu.bandm.tools.d2d2.base.XsltInstance

public class XsltInstance
extends Object

Instantiates the generic d2d xslt module definition for some particular target doctype. Usage pattern is one-shot: Create one instance for each target format and invoke prepareXsltMode(eu.bandm.tools.d2d2.model.XRegExp).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	XsltInstance.CollectAllElements	Collect all elements which can appear in an xslt template spontaneously on the top level of a template content, because they are reachable elements of the target text format.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	xslt_generic_tag_for_backend_elements	Tag which appears in the d2d xslt module definition as placeholder for target format elements.
static final String	xslt_modulename	Name of the generic d2d xslt module definition.
static final String	xslt_tag_toplevel	The tag used for the top-level element of an xslt program.
static final String	xslt_tag_ubiquituous	Name of an element definition in the d2d xslt module which or-s all xslt elements which can appear anywhere in a result elements contents.

Constructor Summary

Constructors

Constructor	Description
XsltInstance(MessageReceiver<SimpleMessage<XMLDocumentIdentifier>> msg, int tracelevel, ModuleRegistry moduleRegistry)

Method Summary

Modifier and Type	Method	Description
protected void	errorcheck_xsltprepare(MessageCounter cnt)	Throws a message exception if any error has occured during the call to "resolve_all_publics".
(package private) Expression	get_xslt_alt_ubiquituous()	The alternative of all xslt expressions which can appear anyhere in a target format element.
(package private) Expression	get_xslt_alt_ubiquituous_repeated()	A "star" repetition wrapped around xslt_alt_ubiquituous.
protected void	hint(String text, Object... args)	Emits a hint message iff tracelevel >0.
protected Alt	makealt(Collection<Reference> subs)	Wraps the argument in an "alt" expression.
protected Module	prepareXsltMode(XRegExp toplevelXRegExp)	The insertion of the target language classes into the content-containing xslt elements is done by once modifying the (copy of the) xslt definition module.
protected Module	prepareXsltMode_text()	For text mode the xslt module can be used directly, no rewriting is necessary but eliminating "xslt:RESULT_ELEMENTS"
protected void	warning(String text, Object... args)	Emits a warning message iff tracelevel >0.

Methods inherited from class java.lang.Object

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

Field Details

xslt_modulename

public static final String xslt_modulename

Name of the generic d2d xslt module definition.

See Also:

• Constant Field Values

xslt_generic_tag_for_backend_elements

public static final String xslt_generic_tag_for_backend_elements

Tag which appears in the d2d xslt module definition as placeholder for target format elements.

See Also:

• Constant Field Values

xslt_tag_toplevel

public static final String xslt_tag_toplevel

The tag used for the top-level element of an xslt program. The standard allows two variants, we support only one of these.

See Also:

• Constant Field Values

xslt_tag_ubiquituous

public static final String xslt_tag_ubiquituous

Name of an element definition in the d2d xslt module which or-s all xslt elements which can appear anywhere in a result elements contents.

See Also:

• Constant Field Values

Constructor Details

XsltInstance

XsltInstance(MessageReceiver<SimpleMessage<XMLDocumentIdentifier>> msg,
 int tracelevel,
 ModuleRegistry moduleRegistry)

Method Details

makealt

protected Alt makealt(Collection<Reference> subs)

Wraps the argument in an "alt" expression.

get_xslt_alt_ubiquituous

Expression get_xslt_alt_ubiquituous()

The alternative of all xslt expressions which can appear anyhere in a target format element.

get_xslt_alt_ubiquituous_repeated

Expression get_xslt_alt_ubiquituous_repeated()

A "star" repetition wrapped around xslt_alt_ubiquituous.

hint

protected void hint(String text,
 Object... args)

Emits a hint message iff tracelevel >0.

warning

protected void warning(String text,
 Object... args)

Emits a warning message iff tracelevel >0.

prepareXsltMode

protected Module prepareXsltMode(XRegExp toplevelXRegExp)

The insertion of the target language classes into the content-containing xslt elements is done by once modifying the (copy of the) xslt definition module.

Each reference to xslt_generic_tag_for_backend_elements == "RESULT_ELEMENTS" is hard rewritten to "(#chars|A|B|C)*", with "A", "B", etc. being the reachable target model element tags.

The other side, i.e. the callability of ubiquituous content-producing xslt elements out of user content is done dynamically, by special look-up code. See the local "boolean inxslt" in the code of Text2Udom.process_open_tag(String, boolean).

prepareXsltMode_text

protected Module prepareXsltMode_text()

For text mode the xslt module can be used directly, no rewriting is necessary but eliminating "xslt:RESULT_ELEMENTS"

errorcheck_xsltprepare

protected void errorcheck_xsltprepare(MessageCounter cnt)

Throws a message exception if any error has occured during the call to "resolve_all_publics". Assumes that these are only possible due to LL(1)-violation and an xslt-parsing of that particular back-end format is thus not possible. FIXME WIE KANN DAS PASSIEREN !?!?!