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java.lang.Objectnet.sf.saxon.expr.ComputedExpression
net.sf.saxon.instruct.Instruction
net.sf.saxon.instruct.AnalyzeString
An xsl:analyze-string elements in the stylesheet. New at XSLT 2.0
Field Summary |
Fields inherited from class net.sf.saxon.expr.ComputedExpression |
locationId, staticProperties |
Fields inherited from interface net.sf.saxon.expr.Expression |
EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD |
Constructor Summary | |
AnalyzeString(Expression select,
Expression regex,
Expression flags,
Expression matching,
Expression nonMatching,
java.util.regex.Pattern pattern)
Construct an AnalyzeString instruction |
Method Summary | |
Expression |
analyze(StaticContext env,
ItemType contextItemType)
Perform static analysis of an expression and its subexpressions. |
int |
computeDependencies()
Compute the dependencies of an expression, as the union of the dependencies of its subexpressions. |
void |
display(int level,
NamePool pool,
java.io.PrintStream out)
Diagnostic print of expression structure. |
int |
getInstructionNameCode()
Get the namecode of the instruction for use in diagnostics |
ItemType |
getItemType()
Get the item type of the items returned by evaluating this instruction |
Expression |
getMatchingExpression()
Get the expression used to process matching substrings |
Expression |
getNonMatchingExpression()
Get the expression used to process non-matching substrings |
java.util.Iterator |
iterateSubExpressions()
Get all the XPath expressions associated with this instruction (in XSLT terms, the expression present on attributes of the instruction, as distinct from the child instructions in a sequence construction) |
TailCall |
processLeavingTail(XPathContext context)
ProcessLeavingTail: called to do the real work of this instruction. |
protected void |
promoteInst(PromotionOffer offer)
Handle promotion offers, that is, non-local tree rewrites. |
Expression |
simplify(StaticContext env)
Simplify an expression. |
Methods inherited from class net.sf.saxon.instruct.Instruction |
appendItem, assembleParams, assembleTunnelParams, computeCardinality, computeSpecialProperties, createsNewNodes, dynamicError, dynamicError, effectiveBooleanValue, evaluateAsString, evaluateItem, getImplementationMethod, getInstructionInfo, getSourceLocator, isXSLT, iterate, process, promote |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface javax.xml.transform.SourceLocator |
getColumnNumber, getLineNumber, getPublicId, getSystemId |
Constructor Detail |
public AnalyzeString(Expression select, Expression regex, Expression flags, Expression matching, Expression nonMatching, java.util.regex.Pattern pattern)
select
- the expression containing the input stringregex
- the regular expressionflags
- the flags parametermatching
- actions to be applied to a matching substringnonMatching
- actions to be applied to a non-matching substringpattern
- the compiled regular expression, if it was known staticallyMethod Detail |
public int getInstructionNameCode()
Instruction
getInstructionNameCode
in class Instruction
public Expression getMatchingExpression()
public Expression getNonMatchingExpression()
public Expression simplify(StaticContext env) throws XPathException
simplify
in interface Expression
simplify
in class Instruction
XPathException
- if an error is discovered during expression
rewritingpublic Expression analyze(StaticContext env, ItemType contextItemType) throws XPathException
This checks statically that the operands of the expression have the correct type; if necessary it generates code to do run-time type checking or type conversion. A static type error is reported only if execution cannot possibly succeed, that is, if a run-time type error is inevitable. The call may return a modified form of the expression.
This method is called after all references to functions and variables have been resolved to the declaration of the function or variable. However, the types of such functions and variables will only be accurately known if they have been explicitly declared.
analyze
in interface Expression
analyze
in class Instruction
env
- the static context of the expression
XPathException
- if an error is discovered during this phase
(typically a type error)public ItemType getItemType()
getItemType
in interface Expression
getItemType
in class Instruction
public int computeDependencies()
computeDependencies
in class ComputedExpression
protected void promoteInst(PromotionOffer offer) throws XPathException
promoteInst
in class Instruction
offer
- The type of rewrite being offered
XPathException
public java.util.Iterator iterateSubExpressions()
iterateSubExpressions
in interface Expression
iterateSubExpressions
in class ComputedExpression
public TailCall processLeavingTail(XPathContext context) throws XPathException
Instruction
processLeavingTail
in class Instruction
context
- The dynamic context of the transformation, giving access to the current node,
the current variables, etc.
XPathException
public void display(int level, NamePool pool, java.io.PrintStream out)
level
- indentation level for this expressionout
- pool
- NamePool used to expand any names appearing in the expression
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