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|
mod json;
mod parser;
mod parser_dispatch;
#[allow(dead_code)]
mod parser_partial;
use winnow::error::ErrorKind;
use winnow::prelude::*;
fn main() -> Result<(), lexopt::Error> {
let args = Args::parse()?;
let data = args.input.as_deref().unwrap_or(if args.invalid {
" { \"a\"\t: 42,
\"b\": [ \"x\", \"y\", 12 ] ,
\"c\": { 1\"hello\" : \"world\"
}
} "
} else {
" { \"a\"\t: 42,
\"b\": [ \"x\", \"y\", 12 ] ,
\"c\": { \"hello\" : \"world\"
}
} "
});
let result = match args.implementation {
Impl::Naive => parser::json::<ErrorKind>.parse(data),
Impl::Dispatch => parser_dispatch::json::<ErrorKind>.parse(data),
};
match result {
Ok(json) => {
println!("{:#?}", json);
}
Err(err) => {
if args.pretty {
println!("{}", err);
} else {
println!("{:#?}", err);
}
}
}
Ok(())
}
#[derive(Default)]
struct Args {
input: Option<String>,
invalid: bool,
pretty: bool,
implementation: Impl,
}
enum Impl {
Naive,
Dispatch,
}
impl Default for Impl {
fn default() -> Self {
Self::Naive
}
}
impl Args {
fn parse() -> Result<Self, lexopt::Error> {
use lexopt::prelude::*;
let mut res = Args::default();
let mut args = lexopt::Parser::from_env();
while let Some(arg) = args.next()? {
match arg {
Long("invalid") => {
res.invalid = true;
}
Long("pretty") => {
// Only case where pretty matters
res.pretty = true;
res.invalid = true;
}
Long("impl") => {
res.implementation = args.value()?.parse_with(|s| match s {
"naive" => Ok(Impl::Naive),
"dispatch" => Ok(Impl::Dispatch),
_ => Err("expected `naive`, `dispatch`"),
})?;
}
Value(input) => {
res.input = Some(input.string()?);
}
_ => return Err(arg.unexpected()),
}
}
Ok(res)
}
}
|
