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java.lang.Object | +--net.sf.saxon.expr.ComputedExpression | +--net.sf.saxon.instruct.Instruction | +--net.sf.saxon.instruct.CallTemplate
Instruction representing an xsl:call-template element in the stylesheet.
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 | |
CallTemplate(Template template,
WithParam[] actualParams,
WithParam[] tunnelParams,
boolean useTailRecursion,
Expression calledTemplateExpression,
NamespaceResolver nsContext)
Construct a CallTemplate instruction. |
Method Summary | |
Expression |
analyze(StaticContext env,
ItemType contextItemType)
Perform static analysis of an expression and its subexpressions. |
void |
display(int level,
NamePool pool,
java.io.PrintStream out)
Diagnostic print of expression structure. |
InstructionInfo |
getInstructionInfo()
Set additional trace properties appropriate to the kind of instruction. |
int |
getInstructionNameCode()
Return the name of this instruction. |
Template |
getTargetTemplate(XPathContext context)
Get the template, in the case where it is specified dynamically. |
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) |
void |
process(XPathContext context)
Process this instruction, without leaving any tail calls. |
TailCall |
processLeavingTail(XPathContext context)
Process 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, dynamicError, dynamicError, effectiveBooleanValue, evaluateAsString, evaluateItem, getImplementationMethod, getItemType, getSourceLocator, iterate, 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 CallTemplate(Template template, WithParam[] actualParams, WithParam[] tunnelParams, boolean useTailRecursion, Expression calledTemplateExpression, NamespaceResolver nsContext)
template
- the Template object identifying the template to be called, in the normal
case where this is known staticallyactualParams
- array of WithParam instructions to calculate the actual parameters
to be supplied to the callcalledTemplateExpression
- expression to calculate the name of the template to be called
at run-time, this supports the saxon:allow-avt optionnsContext
- the static namespace context of the instruction, needed only in the case
where the name of the called template is to be calculated dynamicallyMethod Detail |
public int getInstructionNameCode()
getInstructionNameCode
in class Instruction
public InstructionInfo getInstructionInfo()
getInstructionInfo
in interface InstructionInfoProvider
getInstructionInfo
in class Instruction
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 java.util.Iterator iterateSubExpressions()
iterateSubExpressions
in interface Expression
iterateSubExpressions
in class ComputedExpression
protected void promoteInst(PromotionOffer offer) throws XPathException
promoteInst
in class Instruction
offer
- The type of rewrite being offered
XPathException
public void process(XPathContext context) throws XPathException
process
in interface Expression
process
in class Instruction
context
- the dynamic context for this transformation
XPathException
- if a dynamic error occurspublic TailCall processLeavingTail(XPathContext context) throws XPathException
processLeavingTail
in class Instruction
context
- the dynamic context for this transformation
XPathException
public Template getTargetTemplate(XPathContext context) throws XPathException
context
- The dynamic context of the transformation
XPathException
- if a dynamic error occurs: specifically, if the
template name is computed at run-time (Saxon extension) and the name is invalid
or does not reference a known templatepublic 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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