abstract PigScript parser
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Key: PIG-38
URL: https://issues.apache.org/jira/browse/PIG-38
Project: Pig
Issue Type: Improvement
Components: grunt
Environment: grunt and pigpen
Reporter: Christopher Olston
I am developing Pig Pen, an Eclipse plugin for Pig. Pig Pen needs to parse .pig
scripts. The parsing is the same as for grunt, but the actions I take are
different (e.g., Pig Pen will ignore "store" commands for the purpose of
editing).
What I'd like to do is create an abstract class PigScriptParser, which is
identical to the current GruntParser except no actions are taken. Then I'll add
a GruntParser that extends PigScriptParser, and has concrete implementations of
actions (e.g., what to do when a "store" command is encountered).
I'll also add a PigPenParser that also extends PigScriptParser.
This should not affect the behavior of GruntParser at all -- it just separates
the parsing from the actuating.
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