Add Count Pattern Occurrence #247
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Signed-off-by: Ramli, Nurul Izziany <[email protected]>
Signed-off-by: laeticiachee <[email protected]>
Signed-off-by: laeticiachee <[email protected]>
mkorbel1
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Aug 12, 2025
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mkorbel1
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mkorbel1
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Thank you for your contribution! Some comments :)
| /// | ||
| /// Takes in [bus] of type [Logic]. | ||
| /// [pattern] is the pattern to be counted in the bus. | ||
| /// If [fromStart] is `true`, the count starts from the beginning of the bus. |
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What is the meaning of counting from the start or the end? Shouldn't the resulting count be the same?
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| if (generateError) { | ||
| // If pattern is not found (count equals to 0), return error | ||
| addOutput('error'); |
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why is it an error if count is 0?
| count += valCheck.zeroExtend(count.width); | ||
| } | ||
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| _output = addOutput('count', width: count.width); |
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what's the purpose of the internal _output vairable? Why not just assign this.count <= count or something?
| /// Count the number of occurence of a fixed-width pattern in a bus. | ||
| /// | ||
| /// Takes in [bus] of type [Logic]. | ||
| /// [pattern] is the pattern to be counted in the bus. |
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it may be worth explicitly stating that if the pattern width is greater than the width of the bus, the count will always be 0
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Description & Motivation
Similar to the Count bit occurrence, but instead, find an entire multi-bit pattern
Related Issue(s)
Count pattern occurrence #170
Testing
Test are defined in test/count_pattern_test.dart with multiple cases
Backwards-compatibility
No
Documentation
Yes, documentation on how to use it, and some examples are added in doc/components/count_pattern.md