person_struct_parser

Parser for Rust source code

• GITHUB: https://github.com/DavydKod/person_struct_parser
• CRATES.IO: https://crates.io/crates/person_struct_parser

Person_struct_parser(PSP) is a parsing library for parsing a String into a person object.

• PSP has structure Person(person_struct_parser::person_module::Person) for containing the information about a person(name,age,city)

pub struct Person {
        pub name: String,
        pub age: u32,
        pub city: String,
    }

• There is a function person_struct_parser::person_module::normalize implemented for Person to reduce object data to normal form:

pub fn normalize(&mut self) -> &mut Self

• Function person_struct_parser::person_module::parse is implemented for Person, it's main method for parsing String into the Person object with normalization:

pub fn parse(string: &str) -> anyhow::Result<Person>

• std::fmt::Display is implemented for Person

• The grammar for parsing is placed in grammar.pest file in src folder. Grammar:

alpha = { 'a'..'z' | 'A'..'Z' }
digit = { '0'..'9' }
non_digit = { !digit ~ . }
non_alpha = { !alpha ~ . }
all_characters_without_digits = { non_digit+ }
all_characters_without_alpha = { non_alpha+ }

name = {(all_characters_without_digits)+ ~ (alpha)+ ~ (all_characters_without_digits)+}
age = {(all_characters_without_alpha)+ ~ (digit)+ ~ (all_characters_without_alpha)+}
city = {(all_characters_without_digits)+ ~ (alpha)+ ~ (all_characters_without_digits)+}
person = {name ~ age ~ city}