org.apache.xalan.xsltc.compiler
Class LiteralElement

java.lang.Object
  org.apache.xalan.xsltc.compiler.SyntaxTreeNode
      org.apache.xalan.xsltc.compiler.Instruction
          org.apache.xalan.xsltc.compiler.LiteralElement

All Implemented Interfaces:

Constants

final class LiteralElement
extends Instruction

Field Summary

private java.util.Hashtable	_accessedPrefixes
private boolean	_allAttributesUnique
private java.util.Vector	_attributeElements
private LiteralElement	_literalElemParent
private java.lang.String	_name
private static java.lang.String	XMLNS_STRING

Fields inherited from class org.apache.xalan.xsltc.compiler.SyntaxTreeNode

_attributes, _parent, _qname, Dummy, IndentIncrement, UNKNOWN_STYLESHEET_NODE_ID

Fields inherited from interface org.apache.xalan.xsltc.compiler.Constants

ABSOLUTE_ITERATOR, ACC_FINAL, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_SUPER, ADD_ATTRIBUTE, ADD_ATTRIBUTE_SIG, ADD_ITERATOR, ADD_ITERATOR_SIG, ADD_PARAMETER, ADD_PARAMETER_SIG, APPLY_TEMPLATES, ATTR_SET_SIG, ATTRIBUTE_LIST_FIELD, ATTRIBUTE_LIST_IMPL_CLASS, ATTRIBUTE_LIST_IMPL_SIG, ATTRIBUTES_SIG, BASIS_LIBRARY_CLASS, BOOLEAN_CLASS, BOOLEAN_VALUE, BOOLEAN_VALUE_SIG, CACHED_NODE_LIST_ITERATOR_CLASS, CHARACTERS, CHARACTERS_SIG, CHARACTERSW, CHARACTERSW_SIG, CLEAR_ATTRIBUTES, CLEAR_ATTRIBUTES_SIG, COLLATOR_CLASS, COLLATOR_SIG, COMPILER_PACKAGE, CURRENT_NODE_LIST_FILTER, CURRENT_NODE_LIST_FILTER_SIG, CURRENT_NODE_LIST_ITERATOR, CURRENT_NODE_LIST_ITERATOR_SIG, DEFAULT_NODE_COUNTER, DEFAULT_NODE_COUNTER_SIG, DOCUMENT_PNAME, DOM_ADAPTER_CLASS, DOM_ADAPTER_SIG, DOM_FIELD, DOM_IMPL, DOM_IMPL_CLASS, DOM_IMPL_SIG, DOM_INTF, DOM_INTF_SIG, DOM_PNAME, DOUBLE_CLASS, DOUBLE_SIG, DOUBLE_VALUE, DOUBLE_VALUE_SIG, DUP_FILTERED_ITERATOR, EMPTYATTR_FIELD, EMPTYSTRING, ERROR, EXPAND_STYLESHEET_QNAME_REF, EXPAND_STYLESHEET_QNAME_SIG, FALLBACK_CLASS, FATAL, FILTER_INTERFACE, FILTER_INTERFACE_SIG, FILTER_ITERATOR, FILTER_STEP_ITERATOR, FORMAT_SYMBOLS_FIELD, GET_ATTRIBUTE_VALUE, GET_ATTRIBUTE_VALUE_SIG, GET_CHILDREN, GET_CHILDREN_SIG, GET_ELEMENT_VALUE, GET_ELEMENT_VALUE_SIG, GET_ITERATOR_SIG, GET_NODE_NAME, GET_NODE_NAME_SIG, GET_NODE_TYPE, GET_NODE_TYPE_SIG, GET_NODE_VALUE, GET_NODE_VALUE_ITERATOR, GET_NODE_VALUE_ITERATOR_SIG, GET_NODE_VALUE_SIG, GET_PARAMETER, GET_PARAMETER_SIG, GET_PARENT, GET_PARENT_SIG, GET_TYPED_CHILDREN, GET_TYPED_CHILDREN_SIG, GET_UNPARSED_ENTITY_URI, GET_UNPARSED_ENTITY_URI_SIG, HAS_ATTRIBUTE, HAS_ATTRIBUTE_SIG, HASIDCALL_INDEX, HASIDCALL_INDEX_SIG, INT_VALUE, INT_VALUE_SIG, INTEGER_CLASS, INTEGER_SIG, INTERNAL, INVOKE_METHOD, ITERATOR_FIELD_SIG, ITERATOR_PNAME, KEY_INDEX_CLASS, KEY_INDEX_ITERATOR_SIG, KEY_INDEX_SIG, LAST_INDEX, LOAD_DOCUMENT_CLASS, LOCALE_CLASS, LOCALE_SIG, LOOKUP_STYLESHEET_QNAME_NS_REF, LOOKUP_STYLESHEET_QNAME_NS_SIG, MAKE_NODE, MAKE_NODE_LIST, MAKE_NODE_LIST_SIG, MAKE_NODE_LIST_SIG2, MAKE_NODE_SIG, MAKE_NODE_SIG2, MATCHING_ITERATOR, MATH_CLASS, MULTI_DOM_CLASS, MULTI_DOM_SIG, NAMES_INDEX, NAMES_INDEX_SIG, NAMESPACE_FEATURE, NAMESPACE_INDEX, NAMESPACE_INDEX_SIG, NEXT, NEXT_SIG, NEXTID, NODE, NODE_COUNTER, NODE_COUNTER_SIG, NODE_FIELD, NODE_FIELD_SIG, NODE_ITERATOR, NODE_ITERATOR_BASE, NODE_ITERATOR_SIG, NODE_PNAME, NODE_SIG, NODE_SORT_FACTORY, NODE_SORT_FACTORY_SIG, NODE_SORT_RECORD, NODE_SORT_RECORD_SIG, NS_ANCESTORS_INDEX_SIG, NTH_ITERATOR_CLASS, OBJECT_CLASS, OBJECT_SIG, ORDER_ITERATOR, ORDER_ITERATOR_SIG, OUTPUT_BASE, OUTPUT_HANDLER, OUTPUT_HANDLER_SIG, POP_PARAM_FRAME, POP_PARAM_FRAME_SIG, POSITION_INDEX, PREFIX_URIS_ARRAY_SIG, PREFIX_URIS_IDX_SIG, PUSH_PARAM_FRAME, PUSH_PARAM_FRAME_SIG, REDIRECT_URI, RESET, RESET_SIG, RTF_INITIAL_SIZE, RUNTIME_NODE_CLASS, RUNTIME_PACKAGE, SAX_IMPL, SAX_IMPL_CLASS, SAX_IMPL_SIG, SET_START_NODE, SET_START_NODE_SIG, SINGLETON_ITERATOR, SORT_ITERATOR, SORT_ITERATOR_SIG, STATIC_CHAR_DATA_FIELD, STATIC_CHAR_DATA_FIELD_SIG, STATIC_NAMES_ARRAY_FIELD, STATIC_NAMESPACE_ARRAY_FIELD, STATIC_NS_ANCESTORS_ARRAY_FIELD, STATIC_PREFIX_URIS_ARRAY_FIELD, STATIC_PREFIX_URIS_IDX_ARRAY_FIELD, STATIC_TYPES_ARRAY_FIELD, STATIC_URIS_ARRAY_FIELD, STEP_ITERATOR_CLASS, STREAM_XML_OUTPUT, STRING, STRING_BUFFER_CLASS, STRING_BUFFER_SIG, STRING_CLASS, STRING_SIG, STRING_TO_INT, STRING_TO_INT_SIG, STRING_TO_REAL, STRING_TO_REAL_SIG, STRING_VALUE_HANDLER, STRING_VALUE_HANDLER_SIG, STRING_WRITER, STRIP_SPACE, STRIP_SPACE_INTF, STRIP_SPACE_PARAMS, STRIP_SPACE_SIG, TRANSLET_CLASS, TRANSLET_FIELD, TRANSLET_FIELD_SIG, TRANSLET_INTF, TRANSLET_INTF_SIG, TRANSLET_OUTPUT_BASE, TRANSLET_OUTPUT_INTERFACE, TRANSLET_OUTPUT_PNAME, TRANSLET_OUTPUT_SIG, TRANSLET_PNAME, TRANSLET_SIG, TRANSLET_URI, TRANSLET_VERSION_INDEX, TRANSLET_VERSION_INDEX_SIG, TYPES_INDEX, TYPES_INDEX_SIG, UNION_ITERATOR_CLASS, UNION_ITERATOR_SIG, UNSUPPORTED, URIS_INDEX, URIS_INDEX_SIG, WARNING, WRITER_SIG, XHTML_URI, XMLNS_PREFIX, XMLNS_URI, XSLT_PACKAGE, XSLT_URI

Constructor Summary

LiteralElement()

Method Summary

private java.lang.String	accessedNamespace(java.lang.String prefix) Returns the namespace URI for which a prefix is pointing to
void	addAttribute(SyntaxTreeNode attribute) Add an attribute to this element
boolean	allAttributesUnique() Return true if all attributes of this LRE have unique names.
private boolean	canProduceAttributeNodes(SyntaxTreeNode node, boolean ignoreXslAttribute) Return true if the instructions under the given SyntaxTreeNode can produce attribute nodes to an element.
private boolean	checkAttributesUnique() Check whether all attributes are unique.
protected boolean	contextDependent() Returns true if this expression/instruction depends on the context.
void	display(int indent) Displays the contents of this literal element
ElemDesc	getElemDesc() Return the ElemDesc object for an HTML element.
QName	getName() Returns the QName for this literal element
java.util.Enumeration	getNamespaceScope(SyntaxTreeNode node) This method starts at a given node, traverses all namespace mappings, and assembles a list of all prefixes that (for the given node) maps to _ANY_ namespace URI.
private boolean	isHTMLOutput() Return true if the output method is html.
void	parseContents(Parser parser) Determines the final QName for the element and its attributes.
void	registerNamespace(java.lang.String prefix, java.lang.String uri, SymbolTable stable, boolean declared) Method used to keep track of what namespaces that are references by this literal element and its attributes.
void	setFirstAttribute(SyntaxTreeNode attribute) Set the first attribute of this element
void	translate(ClassGenerator classGen, MethodGenerator methodGen) Compiles code that emits the literal element to the output handler, first the start tag, then namespace declaration, then attributes, then the element contents, and then the element end tag.
private java.lang.String	translateQName(QName qname, SymbolTable stable) Translates the prefix of a QName according to the rules set in the attributes of xsl:stylesheet.
Type	typeCheck(SymbolTable stable) Type-check the contents of this element.

Methods inherited from class org.apache.xalan.xsltc.compiler.SyntaxTreeNode

addAttribute, addElement, addPrefixMapping, compileResultTree, dependentContents, displayContents, elementAt, elementCount, elements, getAttribute, getAttribute, getAttributes, getContents, getImportPrecedence, getLineNumber, getNodeIDForStylesheetNSLookup, getParent, getParser, getPrefixMapping, getQName, getStylesheet, getSymbolTable, getTemplate, getXSLTC, hasAttribute, hasContents, indent, isDummy, lastChild, lookupNamespace, lookupPrefix, parseChildren, removeElement, reportError, reportWarning, setAttributes, setFirstElement, setLineNumber, setParent, setParser, setPrefixMapping, setQName, setQName, translateContents, typeCheckContents, updateScope

Methods inherited from class java.lang.Object

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

Field Detail

_name

private java.lang.String _name

_literalElemParent

private LiteralElement _literalElemParent

_attributeElements

private java.util.Vector _attributeElements

_accessedPrefixes

private java.util.Hashtable _accessedPrefixes

_allAttributesUnique

private boolean _allAttributesUnique

XMLNS_STRING

private static final java.lang.String XMLNS_STRING

See Also:

Constant Field Values

Constructor Detail

LiteralElement

LiteralElement()

Method Detail

getName

public QName getName()

Returns the QName for this literal element

display

public void display(int indent)

Displays the contents of this literal element

Overrides:

display in class SyntaxTreeNode

Parameters:

indent - Indentation level for syntax tree levels.

accessedNamespace

private java.lang.String accessedNamespace(java.lang.String prefix)

Returns the namespace URI for which a prefix is pointing to

registerNamespace

public void registerNamespace(java.lang.String prefix,
                              java.lang.String uri,
                              SymbolTable stable,
                              boolean declared)

Method used to keep track of what namespaces that are references by this literal element and its attributes. The output must contain a definition for each namespace, so we stuff them in a hashtable.

translateQName

private java.lang.String translateQName(QName qname,
                                        SymbolTable stable)

Translates the prefix of a QName according to the rules set in the attributes of xsl:stylesheet. Also registers a QName to assure that the output element contains the necessary namespace declarations.

addAttribute

public void addAttribute(SyntaxTreeNode attribute)

Add an attribute to this element

setFirstAttribute

public void setFirstAttribute(SyntaxTreeNode attribute)

Set the first attribute of this element

typeCheck

public Type typeCheck(SymbolTable stable)
               throws TypeCheckError

Type-check the contents of this element. The element itself does not need any type checking as it leaves nothign on the JVM's stack.

Overrides:

typeCheck in class Instruction

Parameters:

stable - The compiler/parser's symbol table

Throws:

TypeCheckError

getNamespaceScope

public java.util.Enumeration getNamespaceScope(SyntaxTreeNode node)

This method starts at a given node, traverses all namespace mappings, and assembles a list of all prefixes that (for the given node) maps to _ANY_ namespace URI. Used by literal result elements to determine

parseContents

public void parseContents(Parser parser)

Determines the final QName for the element and its attributes. Registers all namespaces that are used by the element/attributes

Overrides:

parseContents in class SyntaxTreeNode

Parameters:

parser - reference to the XSLT parser

contextDependent

protected boolean contextDependent()

Description copied from class: SyntaxTreeNode

Returns true if this expression/instruction depends on the context. By default, every expression/instruction depends on the context unless it overrides this method. Currently used to determine if result trees are compiled using procedures or little DOMs (result tree fragments).

Overrides:

contextDependent in class SyntaxTreeNode

Returns:

'true' if this node depends on the context.

translate

public void translate(ClassGenerator classGen,
                      MethodGenerator methodGen)

Compiles code that emits the literal element to the output handler, first the start tag, then namespace declaration, then attributes, then the element contents, and then the element end tag. Since the value of an attribute may depend on a variable, variables must be compiled first.

Overrides:

translate in class Instruction

Parameters:

classGen - BCEL Java class generator

methodGen - BCEL Java method generator

isHTMLOutput

private boolean isHTMLOutput()

Return true if the output method is html.

getElemDesc

public ElemDesc getElemDesc()

Return the ElemDesc object for an HTML element. Return null if the output method is not HTML or this is not a valid HTML element.

allAttributesUnique

public boolean allAttributesUnique()

Return true if all attributes of this LRE have unique names.

checkAttributesUnique

private boolean checkAttributesUnique()

Check whether all attributes are unique.

canProduceAttributeNodes

private boolean canProduceAttributeNodes(SyntaxTreeNode node,
                                         boolean ignoreXslAttribute)

Return true if the instructions under the given SyntaxTreeNode can produce attribute nodes to an element. Only return false when we are sure that no attribute node is produced. Return true if we are not sure. If the flag ignoreXslAttribute is true, the direct children of the current node are not included in the check.