I am pleased to announce a second alpha release of DXR
<https://wiki.mozilla.org/DXR> (<http://wiki.mozilla.org/DXR>). Several
improvements have been made, including changes to the UI as well as
better cooperation with macros. A complete list of changes can be found
at the end. As this is the second release, I have expanded the live demo
to include not one but two separate indexing trees: clang
<http://dxr.mozilla.org/clang> <http://dxr.mozilla.org/clang> and
mozilla-central <http://dxr.mozilla.org/clang>
<http://dxr.mozilla.org/mozilla/>, both of which are current as of last
night.
The advantage of DXR is that it sees the source code by instrumenting
the compiler at build time, so it is able to understand classes most of
whose methods are defined by macros, like Clang's RecursiveASTVisitor
<http://dxr.mozilla.org/clang/clang/include/clang/AST/RecursiveASTVisitor.h.html>.
Like any source code browser, it is possible to click on an identifier
and then go see information about the identifier, such as its points of
declaration, or its definition. Unlike LXR and MXR, however, it knows
what type of identifier it's working with, so you won't be offered the
definition of BuiltinType::getKind if you look up the getKind method of
an Expr object.
Another new feature is support for plugins, to allow people to use
different compilers, add in support for more languages, or even augment
the UI with new features like capturing line-coverage information. The
current support is rudimentary, but there is already active work on a
dehydra-based indexer <https://github.com/groleo/dxr> (see
<https://github.com/groleo/dxr>).
A list of new features:
* Improved search speed at runtime, and dropped glimpse as a
prerequisite
* The web UI works in newer versions of Firefox
* Support for plugins has been added
* Disk space requirements have been radically reduced
* Setup configuration is easier
* Link extents have been fixed in many cases
* Declarations can now be seen along with definitions
* Macros can now be browsed like source code
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