Benchmark: Parsimmon vs regex

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/parsimmon/1.11.1/parsimmon.umd.min.js"></script>

Script Preparation code:

class Grammar {
    Word = r => Parsimmon.regex(/[a-zA-Z_]+/)
    Complex = r => r.Word.sepBy1(Parsimmon.string(".")).tieWith(".").sepBy1(Parsimmon.string("/")).tieWith("/")
    Regex = r => Parsimmon.regex(/[a-zA-Z_]+(?:\.[a-zA-Z_]+)*(?:\/[a-zA-Z_]+(?:\.[a-zA-Z_]+)*)*/)
};
var language = Parsimmon.createLanguage(new Grammar())

Tests:

Complex
language.Complex.tryParse("Alpha.Bravo.Charlie/Delta/Echo/Foxtrot.Golf.Hotel.India")
Regex
language.Regex.tryParse("Alpha.Bravo.Charlie/Delta/Echo/Foxtrot.Golf.Hotel.India")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Complex
Regex

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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Let's break down the benchmark and its test cases.

**What is being tested:**

The provided benchmark is comparing two approaches for parsing complex strings in JavaScript:

1. **Parsimmon**: A parser combinator library that allows you to build parsers from smaller building blocks. It provides a more concise and expressive way of defining grammars.
2. **Regex** (Regular Expressions): A traditional method for matching patterns in strings.

The benchmark is testing the performance of both approaches on a specific input string: "Alpha.Bravo.Charlie/Delta/Echo/Foxtrot.Golf.Hotel.India".

**Options being compared:**

* Parsimmon
* Regex

**Pros and Cons:**

1. **Parsimmon**:
	* Pros:
		+ More concise and expressive grammar definitions.
		+ Can be more efficient for complex parsing tasks, as it avoids the overhead of regex engine evaluation.
	* Cons:
		+ Requires a deeper understanding of parser combinators and their syntax.
		+ May require additional setup and configuration to optimize performance.
2. **Regex**:
	* Pros:
		+ Widely supported and well-established.
		+ Easy to learn and use, even for those without extensive regex knowledge.
	* Cons:
		+ Can be slower and less efficient than Parsimmon for complex parsing tasks due to the overhead of regex engine evaluation.

**Other considerations:**

* The benchmark uses a specific version of Parsimmon (1.11.1) and includes its UMD module, which allows it to be used in browser environments.
* The test cases use the `tryParse` method, which attempts to parse the input string and returns a result if successful.

**Library usage:**

The benchmark uses Parsimmon, a parser combinator library that provides a more concise and expressive way of defining grammars. It is also used as a dependency in the benchmark preparation code.

**Special JS features or syntax:**

None mentioned in this specific benchmark.

**Alternatives:**

Other alternatives to Parsimmon for building parsers include:

* ANTLR (A parser generator tool)
* Parsec.js (a parser combinator library similar to Parsimmon)
* JSBeautify's parser (a simple, compact parser implementation)

However, it's worth noting that Parsimmon is a well-established and widely-used library in the JavaScript community, making it a good choice for many use cases.

Related benchmarks:

Parsimmon vs regex (version: 0)

Comparing performance of: Complex vs Regex

Created: 3 years ago by: Guest

Jump to the latest result

Complex

Regex

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):