person_struct_parser 0.4.1

Rust parser for person struct #parser #grammar #person_struct
Documentation

person_struct_parser

Parser for Rust source code

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' }
all_characters = {.+}

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