net.sf.saxon.expr.parser
Interface CodeInjector

All Known Implementing Classes:

TimingCodeInjector, TraceCodeInjector, XSLTTraceCodeInjector

public interface CodeInjector

A code injector can be used to add code to the expression tree (for example, diagnostic tracing code) during the process of parsing and tree construction

Method Summary

Expression

inject(Expression exp, StaticContext env, int construct, StructuredQName qName) If tracing, wrap an expression in a trace instruction

Method Detail

inject

Expression inject(Expression exp,
                  StaticContext env,
                  int construct,
                  StructuredQName qName)

If tracing, wrap an expression in a trace instruction

Parameters:

exp - the expression to be wrapped

env - the static context

construct - integer constant identifying the kind of construct

qName - the name of the construct (if applicable)

Returns:

a replacement for the original expression (or the original expression unchanged)