[#PLSQL-66] Handle Sql*Plus comments (rem command) directly at the lexer level - SonarSource

PL/SQL

Created: 25/Jul/11 01:26 PM Updated: 02/Apr/12 06:23 AM

Component/s:

Parser

Affects Version/s:

None

Fix Version/s:

None

Issue Links:

Relates

This issue relates to:

~~PLSQL-91~~ Improve parser: Support REMAINDER and REM

Description

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Currently,

rem Parametres          : 1. Numero de l'interface. Cette valeur doit

is not lexed successfully (stackover on ').

This is because, in a comment, any character might appear. The content of the comment does not have to be made of correctly formed tokens.

Therefore, "rem" must be handled directly at the lexer level, instead of at the parser level.

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The lexer will not be able to tell a PL/SQL "REM"ainder from a Sql*Plus "REM"ark

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Because of a conflict with PL/SQL (Sql*Plus and PL/SQL require two different lexers), we would need a "scannerless" parser to resolve this.

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Still nothing we can do about this one, full Sql*Plus support is really required to tackle this.

(and probably a scannerless parser as well!)