org.apache.xalan.xsltc.compiler
Class EqualityExpr

java.lang.Object
  org.apache.xalan.xsltc.compiler.SyntaxTreeNode
      org.apache.xalan.xsltc.compiler.Expression
          org.apache.xalan.xsltc.compiler.EqualityExpr

All Implemented Interfaces:

Constants

final class EqualityExpr
extends Expression

Field Summary

private Expression	_left
private int	_op
private Expression	_right

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

_falseList, _trueList, _type

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_STRING, XMLNS_URI, XSLT_PACKAGE, XSLT_URI

Constructor Summary

EqualityExpr(int op, Expression left, Expression right)

Method Summary

Expression	getLeft()
boolean	getOp()
Expression	getRight()
boolean	hasLastCall()
boolean	hasPositionCall() Returns true if this expressions contains a call to position().
void	setParser(Parser parser) Set this node's parser.
private void	swapArguments()
java.lang.String	toString()
void	translate(ClassGenerator classGen, MethodGenerator methodGen) Translate this node into JVM bytecodes.
void	translateDesynthesized(ClassGenerator classGen, MethodGenerator methodGen) Redefined by expressions of type boolean that use flow lists.
Type	typeCheck(SymbolTable stable) Typing rules: see XSLT Reference by M.

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

backPatchFalseList, backPatchTrueList, compile, desynthesize, evaluateAtCompileTime, getFalseList, getTrueList, getType, lookupPrimop, startIterator, synthesize

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

addAttribute, addElement, addPrefixMapping, compileResultTree, contextDependent, dependentContents, display, 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, parseContents, removeElement, reportError, reportWarning, setAttributes, setFirstElement, setLineNumber, setParent, setPrefixMapping, setQName, setQName, translateContents, typeCheckContents, updateScope

Methods inherited from class java.lang.Object

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

Field Detail

_op

private final int _op

_left

private Expression _left

_right

private Expression _right

Constructor Detail

EqualityExpr

public EqualityExpr(int op,
                    Expression left,
                    Expression right)

Method Detail

setParser

public void setParser(Parser parser)

Description copied from class: SyntaxTreeNode

Set this node's parser. The parser (the XSLT parser) gives this syntax tree node access to the symbol table and XPath parser.

Overrides:

setParser in class SyntaxTreeNode

Parameters:

parser - The XSLT parser.

toString

public java.lang.String toString()

Specified by:

toString in class Expression

getLeft

public Expression getLeft()

getRight

public Expression getRight()

getOp

public boolean getOp()

hasPositionCall

public boolean hasPositionCall()

Returns true if this expressions contains a call to position(). This is needed for context changes in node steps containing multiple predicates.

Overrides:

hasPositionCall in class Expression

hasLastCall

public boolean hasLastCall()

Overrides:

hasLastCall in class Expression

swapArguments

private void swapArguments()

typeCheck

public Type typeCheck(SymbolTable stable)
               throws TypeCheckError

Typing rules: see XSLT Reference by M. Kay page 345.

Overrides:

typeCheck in class Expression

Parameters:

stable - The compiler/parser's symbol table

Throws:

TypeCheckError

translateDesynthesized

public void translateDesynthesized(ClassGenerator classGen,
                                   MethodGenerator methodGen)

Description copied from class: Expression

Redefined by expressions of type boolean that use flow lists.

Overrides:

translateDesynthesized in class Expression

translate

public void translate(ClassGenerator classGen,
                      MethodGenerator methodGen)

Description copied from class: Expression

Translate this node into JVM bytecodes.

Overrides:

translate in class Expression

Parameters:

classGen - BCEL Java class generator

methodGen - BCEL Java method generator