[HARMONY-2052] [drlvm][kernel] Improve/re-implement a parser of generic signatures

• Type: Task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Classlib, DRLVM
• Estimated Complexity: Moderate
• Assignee: Paulex Yang
• Reporter: Alexey Varlamov
• Created: 02/Nov/06 11:28
• Updated: 02/May/13 02:29

Description

Improve/re-implement a parser of generic signatures in DRLVM kernel classes [1], and move this functionality to classlib (luni ?), so other VMs could reuse it for 1.5 support. The current impl is somewhat messy and half-baked, one need to invent more shaped and modular API to the parser. One more possible issue is parser's dependency on antlr, which may be considered overkill for this duty. I think antlr has its pros, like more illustrative code with clear correlation to formal grammar [2]; unfortunately this is not the case with the impl in question. OTOH minimizing number of dependencies for VM is always good.

[1] working_vm\vm\vmcore\src\kernel_classes\javasrc\org\apache\harmony\lang\reflect**
[2] http://java.sun.com/docs/books/vmspec/2nd-edition/ClassFileFormat-Java5.pdf Para 4.4.4

Issue Links

• blocks: HARMONY-1906 [drlvm][kernel] Dacapo.antlr benchmark works incorreclty with DRLVM
• is depended upon by: HARMONY-2130 [drlvm][kernel] DaCapo antlr fails on drlvm