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64 bit machine 2022-06-04 18:03:11 +08:00
commit 885a8ec459
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1
.gitignore vendored Normal file
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/target

305
Cargo.lock generated Normal file
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Cargo.toml Normal file
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[package]
name = "data_generator"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
colorful = "0.2.1"
clap = { version = "3.1.18", features = ["derive"] }
rand = "0.8.5"

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src/cli.rs Normal file
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use clap::Parser;
/// A simple DSL which allows you to create data simple and fast
#[derive(Parser,Debug)]
#[clap(author = "Caviar-X",version = "0.0.1",about,long_about = None)]
pub struct Args {
/// The generate times
#[clap(short, long, default_value_t = 10)]
count : u8,
/// The name of the file
#[clap(short, long)]
file : String
}

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src/lib.rs Normal file
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pub mod cli;
pub mod parser;

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src/main.rs Normal file
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use data_generator::parser::Parser;
fn main() {
let p = Parser::new_with_context("{int from 0 to 1e5}".into());
println!("{:?}",p.next_token());
}

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src/parser.rs Normal file
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use rand::prelude::*;
use std::fs::*;
#[derive(Clone, Debug)]
pub struct Parser {
pub file: Option<String>,
position: usize,
context: String,
}
impl Parser {
pub fn new(file: String) -> Parser {
Parser {
file: Some(file.clone()),
position: 0,
context: read_to_string(file).expect("Failed to read file"),
}
}
pub fn new_with_context(context: String) -> Parser {
Parser {
file: None,
position: 0,
context,
}
}
pub fn next_token(&mut self) -> Option<Vec<&str>> {
if self.position == self.context.len() {
return None;
}
let substr: &str = self
.context
.get(self.position..self.context.len())
.expect("Failed to get token");
let (l, r) = (
substr.find('{').expect("Failed to get token") + 1,
substr.find('}').expect("Failed to get token"),
);
self.position += (r - l) + 2;
Some(
substr
.get(l..r)
.expect("Failed to get token")
.split_whitespace()
.collect::<Vec<&str>>(),
)
}
fn parse(&self, tokens: Vec<&str>) -> Option<String> {
if tokens.len() != 1 {
return self.parse_statements(tokens);
}
match tokens[0] {
"short" | "i16" => random::<i16>().to_string(),
"int" | "i32" => random::<i32>().to_string(),
"long long" | "i64" => random::<i64>().to_string(),
"int128_t" | "i128" => random::<i128>().to_string(),
"unsigned short" | "u16" => random::<u16>().to_string(),
"unsigned int" | "u32" => random::<u32>().to_string(),
"unsigned long long" | "u64" => Some(random::<u64>().to_string()),
"uint128_t" | "u128" => Some(random::<u128>().to_string()),
_ => {
None
}
}
}
fn parse_statements(&self, tokens: Vec<&str>) -> String {
todo!()
}
}