net.sf.saxon.instruct

Class Doctype

public class Doctype extends Instruction

A saxon:doctype element in the stylesheet.

Constructor Summary
	Doctype(Expression content)

Method Summary
boolean	createsNewNodes() Determine whether this instruction creates new nodes.
void	display(int level, NamePool pool, PrintStream out) Diagnostic print of expression structure.
int	getInstructionNameCode() Get the name of this instruction for diagnostic and tracing purposes
Iterator	iterateSubExpressions() Get the immediate sub-expressions of this expression.
Expression	optimize(Optimizer opt, StaticContext env, ItemType contextItemType)
TailCall	processLeavingTail(XPathContext context)
protected void	promoteInst(PromotionOffer offer) Handle promotion offers, that is, non-local tree rewrites.
Expression	simplify(StaticContext env) Simplify an expression.
Expression	typeCheck(StaticContext env, ItemType contextItemType)

Constructor Detail

Doctype

public Doctype(Expression content)

Method Detail

createsNewNodes

public final boolean createsNewNodes()

Determine whether this instruction creates new nodes. This implementation returns true.

display

public void display(int level, NamePool pool, PrintStream out)

Diagnostic print of expression structure. The expression is written to the System.err output stream

Parameters: level indentation level for this expression out

getInstructionNameCode

public int getInstructionNameCode()

Get the name of this instruction for diagnostic and tracing purposes

iterateSubExpressions

public Iterator iterateSubExpressions()

Get the immediate sub-expressions of this expression. Default implementation returns a zero-length array, appropriate for an expression that has no sub-expressions.

Returns: an iterator containing the sub-expressions of this expression

optimize

public Expression optimize(Optimizer opt, StaticContext env, ItemType contextItemType)

processLeavingTail

public TailCall processLeavingTail(XPathContext context)

promoteInst

protected void promoteInst(PromotionOffer offer)

Handle promotion offers, that is, non-local tree rewrites.

Parameters: offer The type of rewrite being offered

Throws: XPathException

simplify

public Expression simplify(StaticContext env)

Simplify an expression. This performs any static optimization (by rewriting the expression as a different expression). The default implementation does nothing.

Returns: the simplified expression

Throws: net.sf.saxon.trans.XPathException if an error is discovered during expression rewriting

typeCheck

public Expression typeCheck(StaticContext env, ItemType contextItemType)