Parsec is a parser library for the Haskell programming language.

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Multiple base numbers parser

This code is a Parser that parses numbers according to R5RS. #b1001 - binary #o2127 - octal #h02d - hexadecimal #d1231 - decimal 3923 - decimal It is ...
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Haskell s-expression parser and quasiquoter

There are a number of questions on this site about s-expression parsing: e.g., Calculator parsing S-expressions and Code from "Write Yourself a Scheme in 48 Hours" tutorial. However, these ...
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Python tokenizer in Haskell + Parsec

I wrote a tokenizer/lexer (difference?) for Python in Haskell: this is my code on GitHub. I already tested it out with some of CPython's standard library scripts, and it doesn't fail. However, it ...
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Parsing a component of a regex followed by an optional quantifier character

I have a piece of parsec code that parses a unit optionally followed by ?, + or ...
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Parsing characters with parsec

I am trying to parse escape sequences as well as plain characters. Can this be made more succinct? ...
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Generation and parsing of English numerals (cardinal and ordinal)

I need to use the English numerals (American) in Haskell, so I looked for a library that did it. I have not found one, therefore I developed the program that I am presenting here. There are actually ...
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Parsec for primes and fibs

I decided to spend some time working with parsec. I've written some code to check for primality and for whether something is a Fibonacci number. I'm mainly hoping for feedback on readability, but if ...
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Assorted Date Parser

I've written a date parser that parses different types of dates using Parsec. Credit for the original problem goes to here. The following formats are as such: ...
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Readability of a point-free applicative parser

I am writing an applicative parser, which you can think of as a minimal Parsec, just to educate myself. I got started with the excellent tutorial from this StackOverflow answer. Here is the relevant ...
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145 views

Using Parsec for simple arithmetic language

I've been reading Types and Programming Languages and I wanted to try to implement the first language in Haskell to understand it properly I have barely written any Haskell before and not used Parsec ...
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183 views

block comment parser implementation for “monadic parser combinators”

I'm reading monadic parser combinators. On the page 23, they leave an exercise for defining a Gofer block comment parser, and I try to implement it in Haskell. My code is here: ...
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513 views

Using Parsec for lexing&parsing

I'm creating list of Tokens from input [Char] stream using Parsec v3. The definition of ...
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Parsing strings with escaped characters using Parsec

I have been working through the exercises in a Write Yourself a Scheme in 48 Hours/Parsing and hacked together something to get parseString to comprehend escaped characters. Also had some inspiration ...
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INI File Parser in Haskell

I'm learning Haskell at the moment, and have just written my first useful module - a parser fo INI files. I used Parsec. I'd like to know what can be improved here - or maybe I did some things ...
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First attempt at a SVG parser

I figured it's about time to jump into some Haskell, so here's a first attempt at an oddly specific SVG parser: ...