BNFCleanup < P1076

P1076 Web>VHDLProposals>BNFCleanup (2017-04-28, PatrickLehmann) (raw view)EditAttach
---+!! BNF Clean-up
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---++ Proposal Details
| *Authors*        | [[Main.PatrickLehmann][Patrick Lehmann]]                  |
| *Date Proposed*  | 2017-04-28                                                |
| *Last Updated*   | 2017-04-28                                                |
| *Focus*          | simulation and synthesis                                  |
| *Dependencies*   |   |
| *LCS*            | TBD                                                       |

---++
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---++

---++ Summary
The BNF rules of VHDL-2020 contain errors. This proposal lists all BNF clean-up tasks.

---++ BNF Style
---+++ One line per choice
Write only one choice per line, except for lists of short words or symbols.

*Old:*
<pre>
designator ::= identifier | operator_symbol

force_mode ::= <b>in</b> | <b>out</b>
</pre>

*New:*

<pre>
designator ::=
    identifier
  | operator_symbol

force_mode ::= <b>in</b> | <b>out</b>
</pre>

---++ Duplicate Rules
---+++ =extended_digit= vs. =letter_or_digit=
Replace =letter_or_digit= by =extended_digit=.

<pre>
extended_digit ::= digit | letter

letter_or_digit ::= letter | digit
</pre>


---++ Simplify Rules
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---++ Missing Rules
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---++ Arguments FOR

---++ Arguments AGAINST

---++ General Comments

%COMMENT%

---++ Supporters
   * %RED%[[Main.YourName][Your Name]]%ENDCOLOR%
   * _Add your signature here to indicate your support for the proposal_

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Topic revision: r1 - 2017-04-28 - 13:10:11 - PatrickLehmann
P1076