[Objectscript-devel] [OBJECTSCRIPT] Issue #OBJS91 - parser changes for editor enhancements

[Rob C. <rob...@ma...>]

You can view the issue detail at the following URL:
<http://icandy.homeunix.org:443/scarab/issues/id/OBJS91>

Type :        Enhancement
Issue Id :    OBJS91
Reported by: Rob Clark
             rob...@ma... - (rob...@ma...)

Details:

Headline: parser changes for editor enhancements
Description: (1) in case of parse error, return partial parse tree,  possibly with some way (special nodes) to indicate the damaged part of the parse tree.   (2) incremental parsing. 

In same issue b/c both probably involve modifying javacc, and probably easiest to do at the same time.  See comments for more.

(1) in case of parse error, return partial parse tree,  possibly with some way (special nodes) to indicate the damaged part of the parse tree.  The editor could use this to re-colorify even when there is a parse error, and possibly show damaged region in different color, etc..   (2) incremental parsing.  The parse methods generated by javacc (ie public Program Program() { ... }) could return nodes from an earlier parse in certain cases.  See attachment twagner-parsing.pdf.  This would make parsing constant, rather than related to the size of the document.
Severity: Minor
Functional Area: grammar/parser
Status: New