| Edit Proposal | Edit Class, Environment, or Release |
| Number | 542
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| Notify-List | vijeta@interrasystems.com
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| Category | enhancement
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| Synopsis | non_zero_unsigned_number and non_zero_decimal_digit is not supported by industry standard tools
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| State | proposal
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| Class | enhancement
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| Arrival-Date | Feb 12 2004
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| Originator | Kausik Datta
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| Release |
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| Environment |
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| Description |
Two non-terminals "non_zero_unsigned_number" and "non_zero_decimal_digit" are used only in the following section of BNF. According to the BNF any analyzer tool should give syntax error for the literal numbers like 02'b10, 008'o4, 014'h12, 04'd3, 05'dxx_x, 02'dz_z etc. But most of the industry standard tools support the above mentioned literal numbers. Can we remove the rules of non_zero_unsigned_number and non_zero_decimal_digit from BNF? Portion of BNF is as follows: number ::= decimal_number |octal_number |binary_number |hex_number |real_number real_number ::= unsigned_number .unsigned_number |unsigned_number [ .unsigned_number ] exp [ sign ] unsigned__number .... decimal_number ::= unsigned_number |[ size ] decimal__base unsigned_number |[ size ] decimal__base x_digit {_} |[ size ] decimal__base z_digit {_} binary_number ::=[ size ] binary__base binary_value octal_number ::=[ size ] octal__base octal_value hex_number ::=[ size ] hex__base hex_value .... size ::=non_zero_unsigned_number non_zero_unsigned_number ::=non_zero_decimal_digit {_|decimal_digit} unsigned_number ::=decimal_digit {_|decimal_digit } ... ... non_zero_decimal_digit ::=1 |2 |3 |4 |5 |6 |7 |8 |9 decimal_digit ::=0 |1 |2 |3 |4 |5 |6 |7 |8 |9 |
| Fix |
In Syntax 2-1 and in A.8.7, DELETE non_zero_unsigned_number, non_zero_decimal_digit. CHANGE size ::= non_zero_unsigned_number TO size ::= unsigned_number |
| Audit-Trail |
Fix replaced by Shalom.Bresticker@motorola.com on Mon Apr 19 05:13:36 2004 In Syntax 2-1 and in A.8.7, DELETE non_zero_unsigned_number, non_zero_decimal_digit. CHANGE size ::= non_zero_unsigned_number TO size ::= unsigned_number |
| Unformatted |
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