Build with Naz : Comprehensive guide to nom parsing
This tutorial and video are a comprehensive guide to parsing with nom. We cover the basics of parsing and how to use nom to parse a string into a data structure. And more complex topics like human readable error reporting, and building up complex parsers. We will create a variety of different examples ranging from parsing simple CSS like syntax to a full blown Markdown parser.
Article: https://developerlife.com/2023/02/20/...
For comments and feedback please use these:
Repo: https://github.com/nazmulidris/rust-s...
Issues: https://github.com/nazmulidris/rust-s...
Chapters:
00:00:00 Intro
00:01:22 No copy, fast parsing
00:02:28 Combinatorial functional parser
00:02:50 Important types - Parser trait and IResult
00:04:00 Nominomicon and nom repo examples
00:05:37 Accompanying blog post on developerlife.com
00:05:50 Create a new crate for live coding video
00:06:30 Create the first example - parse a hex color string to a Color
00:08:53 Output type Color
00:09:30 Implement the parser for a 2 digit hex segment string, eg "FF"
00:11:11 IResult, Input, Output, Error types
00:14:15 take_while_m_n()
00:18:30 What are the types returned by take_while_m_n()?
00:20:44 Use map_res() to parse the hex string to a u8
00:21:39 Refactor to get the types, lots of higher order functions
00:25:28 Test the hex segment parser so far
00:30:00 Combine the parse_hex_seg() with tag() to parse a full hex color string
00:31:36 Test the full hex color string parser
00:32:48 Now that we have a parser, let's re-implemented in many different ways
00:33:30 Variant of hex parser using preceded() and tuple()
00:37:28 Test the variant that uses preceded() and tuple()
00:42:00 Make another variant which is a function that returns a function to do the parsing
00:43:50 Get a better understanding of the types for higher order functions
00:47:00 Function that returns a function, with all the types, even for Errors
00:51:00 Use this high order function variant to understand the Parser trait
00:54:30 Refactor existing simplistic variant with tuple()
00:56:00 Many different ways to call tuple()
00:58:34 Why can’t we parse “🌜_2F14DF🔅”?
00:59:43 Make a parser that can parse “🌜_2F14DF🔅”
01:12:33 Touching on nom::error::VerboseError
01:14:17 Error handling & human readable output
01:15:26 VerboseError
01:19:08 context
01:26:51 convert_error
01:31:38 Show case different types of human readable nom errors
01:34:34 Implement a simple CSS parser
01:59:53 Implement a simple natural language parser
02:14:35 Simple markdown parser example
02:17:36 Production markdown parser code
02:19:00 Outro