0004762: ?? is not used at all, but registered as a lexer token - MantisBT

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ID

Project

Category

View Status

Date Submitted

Last Update

0004762

OCaml

OCaml general

public

2009-03-30 07:22

2012-07-30 12:16

Reporter

furuse

Assigned To

frisch

Priority

normal

Severity

feature

Reproducibility

always

Status

resolved

Resolution

fixed

Platform

OS

OS Version

Product Version

3.11.0

Target Version

Fixed in Version

Summary

0004762: ?? is not used at all, but registered as a lexer token

Description

The keyword "??" is defined as QUESTIONQUESTION in lexer.mll, but it is never used in parser.mly. As a result, we cannot define the binary operator ?? even though it is not harmful at all.

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Notes
(0004939) weis (developer) 2009-04-29 21:36	?? was used to handle errors in stream parsers. I don't know if it is still necessary with the new Camlp4 implementation...

(0007833) frisch (developer) 2012-07-30 12:16	?? is no longer considered as a token. It can thus be defined as an operator. However, note that it defines a prefix operator, not a binary one.

Issue History
Date Modified	Username	Field	Change
2009-03-30 07:22	furuse	New Issue
2009-04-29 15:45	doligez	Status	new => acknowledged
2009-04-29 21:36	weis	Note Added: 0004939
2012-07-10 19:55	doligez	Severity	minor => feature
2012-07-30 12:16	frisch	Note Added: 0007833
2012-07-30 12:16	frisch	Status	acknowledged => resolved
2012-07-30 12:16	frisch	Resolution	open => fixed
2012-07-30 12:16	frisch	Assigned To	=> frisch

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