The Ant ProjectHelper implementation is pluggable, such that alternate implementations may be used. ProjectHelper2 (the default) uses SAX parsing to parse Ant build scripts. Ant build scripts are re-parsed every time an ant or antcall task is invoked. An alternate implementation should be available that avoids this overhead, since for some build configurations ant and antcall are common.
Created attachment 17830 [details] An implementation of ProjectHelper that avoids parsing of build.xml files. Here is an implementation of such a feature.