Integrate Macro Expansion with New Parser
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Key: PIG-1931
URL: https://issues.apache.org/jira/browse/PIG-1931
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.6.0, 0.9.0
Reporter: Richard Ding
Assignee: Richard Ding
Fix For: 0.9.0
Currently Macro expansion is implemented as a preprocessor (PIG-1793) so that
it can work with the old parser. Now the new parser replaced old parser in
trunk and we can integrate macro expansion into the new parser. This has many
advantages such as better error reporting, less code and making Macro part of
Pig Latin.
To aid debugging, Pig command line option -r (dryrun) will produce a script
with expanded macros (in addition to the script with substituted parameters).
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