Java源码示例：org.apache.xpath.compiler.Compiler
示例1
/**
* Create a LocPathIterator object, including creation
* of step walkers from the opcode list, and call back
* into the Compiler to create predicate expressions.
*
* @param compiler The Compiler which is creating
* this expression.
* @param opPos The position of this iterator in the
* opcode list from the compiler.
*
* @throws javax.xml.transform.TransformerException
*/
protected BasicTestIterator(Compiler compiler, int opPos, int analysis)
throws javax.xml.transform.TransformerException
{
super(compiler, opPos, analysis, false);
int firstStepPos = OpMap.getFirstChildPos(opPos);
int whatToShow = compiler.getWhatToShow(firstStepPos);
if ((0 == (whatToShow
& (DTMFilter.SHOW_ATTRIBUTE
| DTMFilter.SHOW_NAMESPACE
| DTMFilter.SHOW_ELEMENT
| DTMFilter.SHOW_PROCESSING_INSTRUCTION)))
|| (whatToShow == DTMFilter.SHOW_ALL))
initNodeTest(whatToShow);
else
{
initNodeTest(whatToShow, compiler.getStepNS(firstStepPos),
compiler.getStepLocalName(firstStepPos));
}
initPredicateInfo(compiler, firstStepPos);
}
示例2
/**
* Init predicate info.
*
* @param compiler The Compiler object that has information about this
* walker in the op map.
* @param opPos The op code position of this location step.
*
* @throws javax.xml.transform.TransformerException
*/
protected void initPredicateInfo(Compiler compiler, int opPos)
throws javax.xml.transform.TransformerException
{
int pos = compiler.getFirstPredicateOpPos(opPos);
if(pos > 0)
{
m_predicates = compiler.getCompiledPredicates(pos);
if(null != m_predicates)
{
for(int i = 0; i < m_predicates.length; i++)
{
m_predicates[i].exprSetParent(this);
}
}
}
}
示例3
/**
* This method is for building an array of possible levels
* where the target element(s) could be found for a match.
* @param lpi The owning location path iterator.
* @param compiler non-null reference to compiler object that has processed
* the XPath operations into an opcode map.
* @param stepOpCodePos The opcode position for the step.
*
* @return non-null AxesWalker derivative.
*
* @throws javax.xml.transform.TransformerException
* @xsl.usage advanced
*/
static AxesWalker loadOneWalker(
WalkingIterator lpi, Compiler compiler, int stepOpCodePos)
throws javax.xml.transform.TransformerException
{
AxesWalker firstWalker = null;
int stepType = compiler.getOp(stepOpCodePos);
if (stepType != OpCodes.ENDOP)
{
// m_axesWalkers = new AxesWalker[1];
// As we unwind from the recursion, create the iterators.
firstWalker = createDefaultWalker(compiler, stepType, lpi, 0);
firstWalker.init(compiler, stepOpCodePos, stepType);
}
return firstWalker;
}
示例4
/**
* Analyze a step and give information about it's predicates. Right now this
* just returns true or false if the step has a predicate.
*
* @param compiler non-null reference to compiler object that has processed
* the XPath operations into an opcode map.
* @param opPos The opcode position for the step.
* @param stepType The type of step, one of OP_GROUP, etc.
*
* @return true if step has a predicate.
*
* @throws javax.xml.transform.TransformerException
*/
static boolean analyzePredicate(Compiler compiler, int opPos, int stepType)
throws javax.xml.transform.TransformerException
{
int argLen;
switch (stepType)
{
case OpCodes.OP_VARIABLE :
case OpCodes.OP_EXTFUNCTION :
case OpCodes.OP_FUNCTION :
case OpCodes.OP_GROUP :
argLen = compiler.getArgLength(opPos);
break;
default :
argLen = compiler.getArgLengthOfStep(opPos);
}
int pos = compiler.getFirstPredicateOpPos(opPos);
int nPredicates = compiler.countPredicates(pos);
return (nPredicates > 0) ? true : false;
}
示例5
/**
* Create a OneStepIterator object.
*
* @param compiler A reference to the Compiler that contains the op map.
* @param opPos The position within the op map, which contains the
* location path expression for this itterator.
*
* @throws javax.xml.transform.TransformerException
*/
OneStepIterator(Compiler compiler, int opPos, int analysis)
throws javax.xml.transform.TransformerException
{
super(compiler, opPos, analysis);
int firstStepPos = OpMap.getFirstChildPos(opPos);
m_axis = WalkerFactory.getAxisFromStep(compiler, firstStepPos);
}
示例6
/**
* This method is for building an array of possible levels
* where the target element(s) could be found for a match.
* @param lpi The owning location path iterator object.
* @param compiler non-null reference to compiler object that has processed
* the XPath operations into an opcode map.
* @param stepOpCodePos The opcode position for the step.
* @param stepIndex The top-level step index withing the iterator.
*
* @return non-null AxesWalker derivative.
*
* @throws javax.xml.transform.TransformerException
* @xsl.usage advanced
*/
static AxesWalker loadWalkers(
WalkingIterator lpi, Compiler compiler, int stepOpCodePos, int stepIndex)
throws javax.xml.transform.TransformerException
{
int stepType;
AxesWalker firstWalker = null;
AxesWalker walker, prevWalker = null;
int analysis = analyze(compiler, stepOpCodePos, stepIndex);
while (OpCodes.ENDOP != (stepType = compiler.getOp(stepOpCodePos)))
{
walker = createDefaultWalker(compiler, stepOpCodePos, lpi, analysis);
walker.init(compiler, stepOpCodePos, stepType);
walker.exprSetParent(lpi);
// walker.setAnalysis(analysis);
if (null == firstWalker)
{
firstWalker = walker;
}
else
{
prevWalker.setNextWalker(walker);
walker.setPrevWalker(prevWalker);
}
prevWalker = walker;
stepOpCodePos = compiler.getNextStepPos(stepOpCodePos);
if (stepOpCodePos < 0)
break;
}
return firstWalker;
}
示例7
static boolean functionProximateOrContainsProximate(Compiler compiler,
int opPos)
{
int endFunc = opPos + compiler.getOp(opPos + 1) - 1;
opPos = OpMap.getFirstChildPos(opPos);
int funcID = compiler.getOp(opPos);
// System.out.println("funcID: "+funcID);
// System.out.println("opPos: "+opPos);
// System.out.println("endFunc: "+endFunc);
switch(funcID)
{
case FunctionTable.FUNC_LAST:
case FunctionTable.FUNC_POSITION:
return true;
default:
opPos++;
int i = 0;
for (int p = opPos; p < endFunc; p = compiler.getNextOpPos(p), i++)
{
int innerExprOpPos = p+2;
int argOp = compiler.getOp(innerExprOpPos);
boolean prox = isProximateInnerExpr(compiler, innerExprOpPos);
if(prox)
return true;
}
}
return false;
}
示例8
static boolean isProximateInnerExpr(Compiler compiler, int opPos)
{
int op = compiler.getOp(opPos);
int innerExprOpPos = opPos+2;
switch(op)
{
case OpCodes.OP_ARGUMENT:
if(isProximateInnerExpr(compiler, innerExprOpPos))
return true;
break;
case OpCodes.OP_VARIABLE:
case OpCodes.OP_NUMBERLIT:
case OpCodes.OP_LITERAL:
case OpCodes.OP_LOCATIONPATH:
break; // OK
case OpCodes.OP_FUNCTION:
boolean isProx = functionProximateOrContainsProximate(compiler, opPos);
if(isProx)
return true;
break;
case OpCodes.OP_GT:
case OpCodes.OP_GTE:
case OpCodes.OP_LT:
case OpCodes.OP_LTE:
case OpCodes.OP_EQUALS:
int leftPos = OpMap.getFirstChildPos(op);
int rightPos = compiler.getNextOpPos(leftPos);
isProx = isProximateInnerExpr(compiler, leftPos);
if(isProx)
return true;
isProx = isProximateInnerExpr(compiler, rightPos);
if(isProx)
return true;
break;
default:
return true; // be conservative...
}
return false;
}
示例9
/**
* Create a OneStepIterator object.
*
* @param compiler A reference to the Compiler that contains the op map.
* @param opPos The position within the op map, which contains the
* location path expression for this itterator.
*
* @throws javax.xml.transform.TransformerException
*/
OneStepIteratorForward(Compiler compiler, int opPos, int analysis)
throws javax.xml.transform.TransformerException
{
super(compiler, opPos, analysis);
int firstStepPos = OpMap.getFirstChildPos(opPos);
m_axis = WalkerFactory.getAxisFromStep(compiler, firstStepPos);
}
示例10
/**
* Construct an XPath object.
*
* (Needs review -sc) This method initializes an XPathParser/
* Compiler and compiles the expression.
* @param exprString The XPath expression.
* @param locator The location of the expression, may be null.
* @param prefixResolver A prefix resolver to use to resolve prefixes to
* namespace URIs.
* @param type one of {@link #SELECT} or {@link #MATCH}.
* @param errorListener The error listener, or null if default should be used.
*
* @throws javax.xml.transform.TransformerException if syntax or other error.
*/
public XPath(
String exprString, SourceLocator locator, PrefixResolver prefixResolver, int type,
ErrorListener errorListener)
throws javax.xml.transform.TransformerException
{
initFunctionTable();
if(null == errorListener)
errorListener = new org.apache.xml.utils.DefaultErrorHandler();
m_patternString = exprString;
XPathParser parser = new XPathParser(errorListener, locator);
Compiler compiler = new Compiler(errorListener, locator, m_funcTable);
if (SELECT == type)
parser.initXPath(compiler, exprString, prefixResolver);
else if (MATCH == type)
parser.initMatchPattern(compiler, exprString, prefixResolver);
else
throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_CANNOT_DEAL_XPATH_TYPE, new Object[]{Integer.toString(type)})); //"Can not deal with XPath type: " + type);
// System.out.println("----------------");
Expression expr = compiler.compile(0);
// System.out.println("expr: "+expr);
this.setExpression(expr);
if((null != locator) && locator instanceof ExpressionNode)
{
expr.exprSetParent((ExpressionNode)locator);
}
}
示例11
/**
* Construct an XPath object.
*
* (Needs review -sc) This method initializes an XPathParser/
* Compiler and compiles the expression.
* @param exprString The XPath expression.
* @param locator The location of the expression, may be null.
* @param prefixResolver A prefix resolver to use to resolve prefixes to
* namespace URIs.
* @param type one of {@link #SELECT} or {@link #MATCH}.
* @param errorListener The error listener, or null if default should be used.
*
* @throws javax.xml.transform.TransformerException if syntax or other error.
*/
public XPath(
String exprString, SourceLocator locator,
PrefixResolver prefixResolver, int type,
ErrorListener errorListener, FunctionTable aTable)
throws javax.xml.transform.TransformerException
{
m_funcTable = aTable;
if(null == errorListener)
errorListener = new org.apache.xml.utils.DefaultErrorHandler();
m_patternString = exprString;
XPathParser parser = new XPathParser(errorListener, locator);
Compiler compiler = new Compiler(errorListener, locator, m_funcTable);
if (SELECT == type)
parser.initXPath(compiler, exprString, prefixResolver);
else if (MATCH == type)
parser.initMatchPattern(compiler, exprString, prefixResolver);
else
throw new RuntimeException(XSLMessages.createXPATHMessage(
XPATHErrorResources.ER_CANNOT_DEAL_XPATH_TYPE,
new Object[]{Integer.toString(type)}));
//"Can not deal with XPath type: " + type);
// System.out.println("----------------");
Expression expr = compiler.compile(0);
// System.out.println("expr: "+expr);
this.setExpression(expr);
if((null != locator) && locator instanceof ExpressionNode)
{
expr.exprSetParent((ExpressionNode)locator);
}
}
示例12
/**
* Create a LocPathIterator object, including creation
* of step walkers from the opcode list, and call back
* into the Compiler to create predicate expressions.
*
* @param compiler The Compiler which is creating
* this expression.
* @param opPos The position of this iterator in the
* opcode list from the compiler.
* @param analysis Analysis bits that give general information about the
* LocationPath.
*
* @throws javax.xml.transform.TransformerException
*/
MatchPatternIterator(Compiler compiler, int opPos, int analysis)
throws javax.xml.transform.TransformerException
{
super(compiler, opPos, analysis, false);
int firstStepPos = OpMap.getFirstChildPos(opPos);
m_pattern = WalkerFactory.loadSteps(this, compiler, firstStepPos, 0);
boolean fromRoot = false;
boolean walkBack = false;
boolean walkDescendants = false;
boolean walkAttributes = false;
if (0 != (analysis & (WalkerFactory.BIT_ROOT |
WalkerFactory.BIT_ANY_DESCENDANT_FROM_ROOT)))
fromRoot = true;
if (0 != (analysis
& (WalkerFactory.BIT_ANCESTOR
| WalkerFactory.BIT_ANCESTOR_OR_SELF
| WalkerFactory.BIT_PRECEDING
| WalkerFactory.BIT_PRECEDING_SIBLING
| WalkerFactory.BIT_FOLLOWING
| WalkerFactory.BIT_FOLLOWING_SIBLING
| WalkerFactory.BIT_PARENT | WalkerFactory.BIT_FILTER)))
walkBack = true;
if (0 != (analysis
& (WalkerFactory.BIT_DESCENDANT_OR_SELF
| WalkerFactory.BIT_DESCENDANT
| WalkerFactory.BIT_CHILD)))
walkDescendants = true;
if (0 != (analysis
& (WalkerFactory.BIT_ATTRIBUTE | WalkerFactory.BIT_NAMESPACE)))
walkAttributes = true;
if(false || DEBUG)
{
System.out.print("analysis: "+Integer.toBinaryString(analysis));
System.out.println(", "+WalkerFactory.getAnalysisString(analysis));
}
if(fromRoot || walkBack)
{
if(walkAttributes)
{
m_superAxis = Axis.ALL;
}
else
{
m_superAxis = Axis.DESCENDANTSFROMROOT;
}
}
else if(walkDescendants)
{
if(walkAttributes)
{
m_superAxis = Axis.ALLFROMNODE;
}
else
{
m_superAxis = Axis.DESCENDANTORSELF;
}
}
else
{
m_superAxis = Axis.ALL;
}
if(false || DEBUG)
{
System.out.println("axis: "+Axis.getNames(m_superAxis));
}
}
示例13
/**
* Init a FilterExprWalker.
*
* @param compiler non-null reference to the Compiler that is constructing.
* @param opPos positive opcode position for this step.
* @param stepType The type of step.
*
* @throws javax.xml.transform.TransformerException
*/
public void init(Compiler compiler, int opPos, int stepType)
throws javax.xml.transform.TransformerException
{
super.init(compiler, opPos, stepType);
// Smooth over an anomily in the opcode map...
switch (stepType)
{
case OpCodes.OP_FUNCTION :
case OpCodes.OP_EXTFUNCTION :
m_mustHardReset = true;
case OpCodes.OP_GROUP :
case OpCodes.OP_VARIABLE :
m_expr = compiler.compile(opPos);
m_expr.exprSetParent(this);
//if((OpCodes.OP_FUNCTION == stepType) && (m_expr instanceof org.apache.xalan.templates.FuncKey))
if(m_expr instanceof org.apache.xpath.operations.Variable)
{
// hack/temp workaround
m_canDetachNodeset = false;
}
break;
default :
m_expr = compiler.compile(opPos + 2);
m_expr.exprSetParent(this);
}
// if(m_expr instanceof WalkingIterator)
// {
// WalkingIterator wi = (WalkingIterator)m_expr;
// if(wi.getFirstWalker() instanceof FilterExprWalker)
// {
// FilterExprWalker fw = (FilterExprWalker)wi.getFirstWalker();
// if(null == fw.getNextWalker())
// {
// m_expr = fw.m_expr;
// m_expr.exprSetParent(this);
// }
// }
//
// }
}
示例14
/**
* Initialize the location path iterators. Recursive.
*
* @param compiler The Compiler which is creating
* this expression.
* @param opPos The position of this iterator in the
* opcode list from the compiler.
* @param count The insert position of the iterator.
*
* @throws javax.xml.transform.TransformerException
*/
protected void loadLocationPaths(Compiler compiler, int opPos, int count)
throws javax.xml.transform.TransformerException
{
// TODO: Handle unwrapped FilterExpr
int steptype = compiler.getOp(opPos);
if (steptype == OpCodes.OP_LOCATIONPATH)
{
loadLocationPaths(compiler, compiler.getNextOpPos(opPos), count + 1);
m_exprs[count] = createDTMIterator(compiler, opPos);
m_exprs[count].exprSetParent(this);
}
else
{
// Have to check for unwrapped functions, which the LocPathIterator
// doesn't handle.
switch (steptype)
{
case OpCodes.OP_VARIABLE :
case OpCodes.OP_EXTFUNCTION :
case OpCodes.OP_FUNCTION :
case OpCodes.OP_GROUP :
loadLocationPaths(compiler, compiler.getNextOpPos(opPos), count + 1);
WalkingIterator iter =
new WalkingIterator(compiler.getNamespaceContext());
iter.exprSetParent(this);
if(compiler.getLocationPathDepth() <= 0)
iter.setIsTopLevel(true);
iter.m_firstWalker = new org.apache.xpath.axes.FilterExprWalker(iter);
iter.m_firstWalker.init(compiler, opPos, steptype);
m_exprs[count] = iter;
break;
default :
m_exprs = new LocPathIterator[count];
}
}
}
示例15
public static void diagnoseIterator(String name, int analysis, Compiler compiler)
{
System.out.println(compiler.toString()+", "+name+", "
+ Integer.toBinaryString(analysis) + ", "
+ getAnalysisString(analysis));
}
示例16
/**
* Special purpose function to see if we can optimize the pattern for
* a DescendantIterator.
*
* @param compiler non-null reference to compiler object that has processed
* the XPath operations into an opcode map.
* @param stepOpCodePos The opcode position for the step.
*
* @return 32 bits as an integer that give information about the location
* path as a whole.
*
* @throws javax.xml.transform.TransformerException
*/
public static int getAxisFromStep(
Compiler compiler, int stepOpCodePos)
throws javax.xml.transform.TransformerException
{
int stepType = compiler.getOp(stepOpCodePos);
switch (stepType)
{
case OpCodes.FROM_FOLLOWING :
return Axis.FOLLOWING;
case OpCodes.FROM_FOLLOWING_SIBLINGS :
return Axis.FOLLOWINGSIBLING;
case OpCodes.FROM_PRECEDING :
return Axis.PRECEDING;
case OpCodes.FROM_PRECEDING_SIBLINGS :
return Axis.PRECEDINGSIBLING;
case OpCodes.FROM_PARENT :
return Axis.PARENT;
case OpCodes.FROM_NAMESPACE :
return Axis.NAMESPACE;
case OpCodes.FROM_ANCESTORS :
return Axis.ANCESTOR;
case OpCodes.FROM_ANCESTORS_OR_SELF :
return Axis.ANCESTORORSELF;
case OpCodes.FROM_ATTRIBUTES :
return Axis.ATTRIBUTE;
case OpCodes.FROM_ROOT :
return Axis.ROOT;
case OpCodes.FROM_CHILDREN :
return Axis.CHILD;
case OpCodes.FROM_DESCENDANTS_OR_SELF :
return Axis.DESCENDANTORSELF;
case OpCodes.FROM_DESCENDANTS :
return Axis.DESCENDANT;
case OpCodes.FROM_SELF :
return Axis.SELF;
case OpCodes.OP_EXTFUNCTION :
case OpCodes.OP_FUNCTION :
case OpCodes.OP_GROUP :
case OpCodes.OP_VARIABLE :
return Axis.FILTEREDLIST;
}
throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_NULL_ERROR_HANDLER, new Object[]{Integer.toString(stepType)})); //"Programmer's assertion: unknown opcode: "
//+ stepType);
}
示例17
/**
* Figure out if we're executing a toplevel expression.
* If so, we can't be inside of a predicate.
*/
public void postCompileStep(Compiler compiler)
{
m_isTopLevel = compiler.getLocationPathDepth() == -1;
}
示例18
/**
* Figure out if we're executing a toplevel expression.
* If so, we can't be inside of a predicate.
*/
public void postCompileStep(Compiler compiler)
{
m_isTopLevel = compiler.getLocationPathDepth() == -1;
}
示例19
/**
* This function is currently only being used by Position()
* and Last(). See respective functions for more detail.
*/
public void postCompileStep(Compiler compiler)
{
// no default action
}
示例20
/**
* Create a LocPathIterator object, including creation
* of step walkers from the opcode list, and call back
* into the Compiler to create predicate expressions.
*
* @param compiler The Compiler which is creating
* this expression.
* @param opPos The position of this iterator in the
* opcode list from the compiler.
* @param shouldLoadWalkers True if walkers should be
* loaded, or false if this is a derived iterator and
* it doesn't wish to load child walkers.
*
* @throws javax.xml.transform.TransformerException
*/
protected BasicTestIterator(
Compiler compiler, int opPos, int analysis, boolean shouldLoadWalkers)
throws javax.xml.transform.TransformerException
{
super(compiler, opPos, analysis, shouldLoadWalkers);
}
示例21
/**
* Create a WalkingIterator iterator, including creation
* of step walkers from the opcode list, and call back
* into the Compiler to create predicate expressions.
*
* @param compiler The Compiler which is creating
* this expression.
* @param opPos The position of this iterator in the
* opcode list from the compiler.
* @param shouldLoadWalkers True if walkers should be
* loaded, or false if this is a derived iterator and
* it doesn't wish to load child walkers.
*
* @throws javax.xml.transform.TransformerException
*/
WalkingIterator(
Compiler compiler, int opPos, int analysis, boolean shouldLoadWalkers)
throws javax.xml.transform.TransformerException
{
super(compiler, opPos, analysis, shouldLoadWalkers);
int firstStepPos = OpMap.getFirstChildPos(opPos);
if (shouldLoadWalkers)
{
m_firstWalker = WalkerFactory.loadWalkers(this, compiler, firstStepPos, 0);
m_lastUsedWalker = m_firstWalker;
}
}
示例22
/**
* Create a LocPathIterator object, including creation
* of step walkers from the opcode list, and call back
* into the Compiler to create predicate expressions.
*
* @param compiler The Compiler which is creating
* this expression.
* @param opPos The position of this iterator in the
* opcode list from the compiler.
* @param shouldLoadWalkers True if walkers should be
* loaded, or false if this is a derived iterator and
* it doesn't wish to load child walkers.
*
* @throws javax.xml.transform.TransformerException
*/
protected LocPathIterator(
Compiler compiler, int opPos, int analysis, boolean shouldLoadWalkers)
throws javax.xml.transform.TransformerException
{
setLocPathIterator(this);
}
示例23
/**
* Create a ChildIterator object.
*
* @param compiler A reference to the Compiler that contains the op map.
* @param opPos The position within the op map, which contains the
* location path expression for this itterator.
* @param analysis Analysis bits of the entire pattern.
*
* @throws javax.xml.transform.TransformerException
*/
ChildIterator(Compiler compiler, int opPos, int analysis)
throws javax.xml.transform.TransformerException
{
super(compiler, opPos, analysis, false);
// This iterator matches all kinds of nodes
initNodeTest(DTMFilter.SHOW_ALL);
}
示例24
/**
* Create a WalkingIterator iterator, including creation
* of step walkers from the opcode list, and call back
* into the Compiler to create predicate expressions.
*
* @param compiler The Compiler which is creating
* this expression.
* @param opPos The position of this iterator in the
* opcode list from the compiler.
* @param shouldLoadWalkers True if walkers should be
* loaded, or false if this is a derived iterator and
* it doesn't wish to load child walkers.
*
* @throws javax.xml.transform.TransformerException
*/
WalkingIteratorSorted(
Compiler compiler, int opPos, int analysis, boolean shouldLoadWalkers)
throws javax.xml.transform.TransformerException
{
super(compiler, opPos, analysis, shouldLoadWalkers);
}
示例25
/**
* Create a UnionPathIterator object, including creation
* of location path iterators from the opcode list, and call back
* into the Compiler to create predicate expressions.
*
* @param compiler The Compiler which is creating
* this expression.
* @param opPos The position of this iterator in the
* opcode list from the compiler.
*
* @throws javax.xml.transform.TransformerException
*/
public UnionPathIterator(Compiler compiler, int opPos)
throws javax.xml.transform.TransformerException
{
super();
opPos = OpMap.getFirstChildPos(opPos);
loadLocationPaths(compiler, opPos, 0);
}
示例26
/**
* Create a new location path iterator.
*
* @param compiler The Compiler which is creating
* this expression.
* @param opPos The position of this iterator in the
*
* @return New location path iterator.
*
* @throws javax.xml.transform.TransformerException
*/
protected LocPathIterator createDTMIterator(
Compiler compiler, int opPos) throws javax.xml.transform.TransformerException
{
LocPathIterator lpi = (LocPathIterator)WalkerFactory.newDTMIterator(compiler, opPos,
(compiler.getLocationPathDepth() <= 0));
return lpi;
}
示例27
/**
* Initialize an AxesWalker during the parse of the XPath expression.
*
* @param compiler The Compiler object that has information about this
* walker in the op map.
* @param opPos The op code position of this location step.
* @param stepType The type of location step.
*
* @throws javax.xml.transform.TransformerException
*/
public void init(Compiler compiler, int opPos, int stepType)
throws javax.xml.transform.TransformerException
{
initPredicateInfo(compiler, opPos);
// int testType = compiler.getOp(nodeTestOpPos);
}
示例28
/**
* Create a ChildTestIterator object.
*
* @param compiler A reference to the Compiler that contains the op map.
* @param opPos The position within the op map, which contains the
* location path expression for this itterator.
*
* @throws javax.xml.transform.TransformerException
*/
ChildTestIterator(Compiler compiler, int opPos, int analysis)
throws javax.xml.transform.TransformerException
{
super(compiler, opPos, analysis);
}
示例29
/**
* Create a LocPathIterator object, including creation
* of step walkers from the opcode list, and call back
* into the Compiler to create predicate expressions.
*
* @param compiler The Compiler which is creating
* this expression.
* @param opPos The position of this iterator in the
* opcode list from the compiler.
*
* @throws javax.xml.transform.TransformerException
*/
protected LocPathIterator(Compiler compiler, int opPos, int analysis)
throws javax.xml.transform.TransformerException
{
this(compiler, opPos, analysis, true);
}
示例30
/**
* Create a AttributeIterator object.
*
* @param compiler A reference to the Compiler that contains the op map.
* @param opPos The position within the op map, which contains the
* location path expression for this itterator.
*
* @throws javax.xml.transform.TransformerException
*/
AttributeIterator(Compiler compiler, int opPos, int analysis)
throws javax.xml.transform.TransformerException
{
super(compiler, opPos, analysis);
}
